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Benchmark the model "GeForce GT 640" for the low end of the Kepler
On sale 10,980 yen: actual selling price
GPU "GeForce GT 640" for low-end (640 or less) has been released from NVIDIA, which adopted the Kepler architecture. Now that you get the video card "GV-N640OC-2GI" made by GIGABYTE this time, with a 640 this, to convey a report that mixes a very simple benchmark. The purchase price was 10,980 yen.
? Kepler's first desktop-based low-end model
NVIDIA GPU series for low-end, prior to the announcement of 640, began the transition to the 600 series with the introduction of 610/GT 620/GT 630 GeForce, 610/GT 620/GT 630 400 series and this is both renaming of the old product in the 500 series, the so-called Fermi architecture, was not a Kepler-based architecture of GeForce GTX 680 has been adopted by the upper.
640 was released on June 4 is a product based on the Kepler architecture, but for desktop becomes first adopted. CUDA seems to be the number of core 384 has been based, this is equivalent to spec, such as the previously announced GeForce GT 650M for mobile, and was diverted to this core.
Are core clock of reference is 797MHz, the memory is DDR3, bus width 128bit, memory clock and 1.782GHz. In addition, 640 products and equipped with GDDR5, has been equipped with Fermi core product lineup, at the time of June 4 in the market could not be confirmed either. Even among good company GV-N640OC-2GI was obtained this time, has become a model of Kepler-based core with DDR3.
The following table summarizes the lineup of the series was 600 GeForce GT, 640 has become the top in the GT series can be seen from this table.
GeForce GT 600 series comparison [Table 1]
? GV-N640OC-2GI
Before moving on to the benchmark, I want to touch on GV-N640OC-2GI body first.
Substrate length (not including bracket) First that comes in a very short and 144mm, this area, such as for low-end place indeed. GV-N640OC-2GI cover of the cooler has a protruding about 35mm from the board, has become a card length of around 180mm but as a result.
Cooler but that, in type 2 slots occupied, but the heat sink as reference LGA1155 CPU cooler Intel, made of aluminum, fin is growing radially. In addition, fans have become a thing of the 9-bladed 95mm in diameter but thin. This area seems to be the result of an emphasis on low-end while cooling. Moreover, the bracket also arranged the exhaust port, that is doing the cooling air may be seen to.
Not provided with the PCI Express auxiliary power connector on the card, which works only with power supply from PCI Express. Implementation and around the power supply has become so simple either. This area also has become such as to suggest that it has been designed for mobile from the beginning.
Display interface DVI-D ? 2, includes mini D-Sub15 pin, the HDMI. Because a two-stage bracket, but was dressed a systematic increase output with it.
Although not covered by warranty, apparently to remove the cooler, model number of GPU and memory could be confirmed. GPU is stamped "GK107-300-A2", certainly does not seem in the GK107 core of Kepler. The size of the chip is 11 ? 11mm in (width ? depth), die size and I can guess around 120 mm square by actual measurement. Memory is "K4W2G1646C-HC11" of Samsung, DDR3 is for graphics, has become a product spec sheet 1.8Gbps According to the data of the other hand.
In addition, the core clock of this product is 1,050 MHz, memory and overclocking has been driving 1.8GHz. But memory is a memory OC to the standards as adopted, the core clock is 32% higher than calculated reference setting. However, the 640 was released at the same time it was in spite of all companies DDR3 model, the model is nil, all have become more than 900MHz core clock as reference. This time in the clock continue to benchmark this remains so.
? benchmark environment
The benchmark environment as shown in the table below. You determine CPU but rather underpowered Pentium G630T, to become a stumbling block in consideration of the balance of the entire system, to test for low-end GPU would not first.
Test environment [Table 2]
Choice for comparison was the "GF PGTS450SuperOC/1GD5 FUJIN 2.1" of the Galaxy. The will should be compared with the "GeForce GT 440" In the model number, this is because it has been renamed to GeForce GT 630, was clearly subordinate position.
On the other hand, was originally to be prepared or very close to the "GeForce GTX 550 Ti" and "GeForce GTX 560 SE" that price range, that could not be prepared in relation to the schedule. Therefore, it was equipped with a GeForce GTS 450 GF PGTS450SuperOC/1GD5 FUJIN 2.1 (below 450) you want to score published as a reference.
In addition, overclocked to 4GHz is a model by a 888MHz / memory clock to core clock This product will also be predicted performance and do not receive a step after the 550 Ti. Same 128bit memory bus width is 640 and for the same, it may say 640 but a good rival.
? Mark the relatively good score in DirectX 11
Performace preset of "3DMark 11" First there is a (graph 1), has come (-2.7%) as far as a step close to 450 in both the overall score, score graphics, it can be said with quite good results. Kepler?????????????????????????????????
Testing the DirectX 11 "Heaven Benchmark 3.0" of Unigine (graph 2,3), but at 1,366 ? 768 dot close to -3.8% to 450, with a resolution (WUXGA) is about -14.3% 1,920 ? 1,200 dot also were weaned.
Memory bandwidth of the GV-N640OC-2GI is computationally 28.8GB/sec, less than half of 64GB/sec of GF PGTS450SuperOC/1GD5 FUJIN 2.1. This area has been pulling the foot of a high-resolution score. Can also be viewed as that can maintain the performance of over 80% of 450 in the half band width Conversely, in the Kepler architecture be seen also that the good use of memory bandwidth, however.
Also the result of (graph 4) DirectX of "Lost Planet 2" of 11 DirectX 11 enabled games benchmark, to mark the performance of around about 90% compared with GF PGTS450SuperOC/1GD5 FUJIN 2.1, showed a good score. Although there are two generations ago, would say with the results so far can be close to the GTS of handling up a notch in that NVIDIA, the name of Kepler is not ashamed of highly efficient architecture.
? DirectX 10/9 is somewhat weak. Shackles or memory bandwidth
Benchmark "3DMark Vantage" 10 DirectX DirectX 9 compatible benchmark but (Graph 8), here is the GF PGTS450SuperOC/1GD5 FUJIN 2.1 (graph 5,6), "3DMark06" (graph 7), "Lost Planet 2" followed by The result was a little place to go. Over 80%, and led to the result of 3DMark06 SM 3.0 of WUXGA particularly good performance is only about 70% did not.
Of course, it's also optimized drivers seems to be in these benchmarks is light shader program itself, and has become a stumbling block rather large memory bandwidth. It has become particularly noticeable difference between the score of high-resolution, instead of GDDR5, the adoption of DDR3 memory will be missed.
? GPU power consumption and temperature
Finally, the power consumption during idle and run but 3.0 Heaven Benchmark (Graph 9), idle time has left a very excellent results with 81W 39W, even when the load in the entire system. Even considering that this is a version overclocked to both products, "(of course, but comparisons in Heaven Benchmark) Daseru beating by the power consumption of less than half the performance of approximately 90%" It that is the impact of hard.
If this power, in 640 non-OC version, such as adopting a model with low TDP CPU also on the side of addition, if a little twist Korase, this will be able to drive in 1 AC Adapter 90W. Only that was also adopted for mobile truly is.
In addition, the GPU temperature, 37 ? at 26 ? idle in an environment of room temperature, was 44 ? (at run 3.0 Heaven Benchmark) at full load. It can not be compared side by side because of the different cooler, considering that 42 ? even when idle GF PGTS450SuperOC/1GD5 FUJIN 2.1 of cooling mechanism ambitious adopted two heat pipes, it was 69 ? when fully loaded, very good and the results would say.
About the static sound, but a subjective evaluation, the sound is almost no wind noise and axis both at the time / full load when idle, and the result was good. The only unfortunate but point the coil squeal a little when full load rather hear, this is also, there is a possibility of individual differences, the level will not be heard once housed in the case.
? Recommended for light use. DDR3 prices and neck is adopted
The above is carried out a very simple benchmark, it is impressive that "the percentage of low heat generation high-performance, low power consumption" than anything else. If you are getting high efficiency only this would be done to smooth alternation of generations of low-end.
Become a bottleneck of this product, and the lack of DDR3 memory bandwidth due to the adoption, the price of the product probably will. As is evident, with DDR3 memory bandwidth shortage has been pulling his feet from the bench results. Products with GDDR5 is regrettable in this issue is resolved, only to be expected better results than 450.
Prices, but has been released from ? 8,000 units, many models are more than 10,000 yen, in this price range even comes into view as well as 560 SE GeForce GTX 550 Ti GeForce GTX. In addition, it is also crowded market Radeon HD 7750/7750 of a rival. 640 enters the choice is multiplied if the balance power and performance, when considered in cost performance, it is divided into other products. Offered at the price you have, you become able to obtain less than 7,000 yen, the low-end will be decisive.
? NVIDIA website
http://www.nvidia.co.jp/
? Products
http://www.nvidia.co.jp/object/geforce-gt-640-oem-jp.html
? GIGABYTE website
http://www.gigabyte.jp/
? Product (sales CFD, Distributors)
http://www.cfd.co.jp/gigabyte/vga/gv-n640oc-2gi.html
? Related Articles
NVIDIA - June 4, 2012], "GeForce GT 640" of Kepler-based
http://pc.watch.impress.co.jp/docs/news/20120604_537590.html
(June 12, 2012)
[Takashi Liu Reported by]
Benchmark the model "GeForce GT 640" for the low end of the Kepler
 |
| GV-N640OC-2GI |
GPU "GeForce GT 640" for low-end (640 or less) has been released from NVIDIA, which adopted the Kepler architecture. Now that you get the video card "GV-N640OC-2GI" made by GIGABYTE this time, with a 640 this, to convey a report that mixes a very simple benchmark. The purchase price was 10,980 yen.
? Kepler's first desktop-based low-end model
 |
640 was released on June 4 is a product based on the Kepler architecture, but for desktop becomes first adopted. CUDA seems to be the number of core 384 has been based, this is equivalent to spec, such as the previously announced GeForce GT 650M for mobile, and was diverted to this core.
Are core clock of reference is 797MHz, the memory is DDR3, bus width 128bit, memory clock and 1.782GHz. In addition, 640 products and equipped with GDDR5, has been equipped with Fermi core product lineup, at the time of June 4 in the market could not be confirmed either. Even among good company GV-N640OC-2GI was obtained this time, has become a model of Kepler-based core with DDR3.
The following table summarizes the lineup of the series was 600 GeForce GT, 640 has become the top in the GT series can be seen from this table.
GeForce GT 600 series comparison [Table 1]
| GT 610 | GT 620 | GT 630 | GT 640 | |||
| Architecture | Fermi | Kepler | ||||
| Core clock | 810MHz | 700MHz | 810MHz | 720MHz | 797MHz | 950MHz |
| The number of core CUDA | 48 | 96 | 144 | 384 | ||
| CUDA core clock | 1,620 MHz | 1,400 MHz | 1,620 MHz | 1,440 MHz | 797MHz | 950MHz |
| Memory type | DDR3 | GDDR5 | DDR3 | GDDR5 | ||
| Memory bus width. | 64bit | 128bit | 192bit | 128bit | ||
| Memory speed | 1,800 MHz | 3,200 MHz | 1,782 MHz | 5GHz | ||
Before moving on to the benchmark, I want to touch on GV-N640OC-2GI body first.
Substrate length (not including bracket) First that comes in a very short and 144mm, this area, such as for low-end place indeed. GV-N640OC-2GI cover of the cooler has a protruding about 35mm from the board, has become a card length of around 180mm but as a result.
Cooler but that, in type 2 slots occupied, but the heat sink as reference LGA1155 CPU cooler Intel, made of aluminum, fin is growing radially. In addition, fans have become a thing of the 9-bladed 95mm in diameter but thin. This area seems to be the result of an emphasis on low-end while cooling. Moreover, the bracket also arranged the exhaust port, that is doing the cooling air may be seen to.
Not provided with the PCI Express auxiliary power connector on the card, which works only with power supply from PCI Express. Implementation and around the power supply has become so simple either. This area also has become such as to suggest that it has been designed for mobile from the beginning.
Display interface DVI-D ? 2, includes mini D-Sub15 pin, the HDMI. Because a two-stage bracket, but was dressed a systematic increase output with it.
Although not covered by warranty, apparently to remove the cooler, model number of GPU and memory could be confirmed. GPU is stamped "GK107-300-A2", certainly does not seem in the GK107 core of Kepler. The size of the chip is 11 ? 11mm in (width ? depth), die size and I can guess around 120 mm square by actual measurement. Memory is "K4W2G1646C-HC11" of Samsung, DDR3 is for graphics, has become a product spec sheet 1.8Gbps According to the data of the other hand.
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| Package of accessories, such as GV-N640OC-2GI | GV-N640OC-2GI body | Output interface |
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| A large cooler with a fan | Cooler occupies two slots | I removed the GPU cooler |
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| Mark of the GK107-300-A2 | K4W2G1646C-HC11 memory of Samsung | Simple power supply unit |
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| Result of the GPU-Z |
? benchmark environment
The benchmark environment as shown in the table below. You determine CPU but rather underpowered Pentium G630T, to become a stumbling block in consideration of the balance of the entire system, to test for low-end GPU would not first.
Test environment [Table 2]
| CPU | Pentium G630T (2.3GHz) |
| Memory | Kingmax KHX1600C8D3K2/4GX (2GB ? 2, DDR3-1600) |
| Motherboard | P8Z77-I Deluxe |
| SSD | Kingmax SNV125-S2/30GB |
| OS | Windows 7 Ultimate (64bit) |
| Power | Abee ZUMAX ZU425 |
| Driver version | NVIDIA GeForce R300 Driver Ver.301.42 |
 |
| "GF PGTS450SuperOC/1GD5 FUJIN 2.1" of the Galaxy |
On the other hand, was originally to be prepared or very close to the "GeForce GTX 550 Ti" and "GeForce GTX 560 SE" that price range, that could not be prepared in relation to the schedule. Therefore, it was equipped with a GeForce GTS 450 GF PGTS450SuperOC/1GD5 FUJIN 2.1 (below 450) you want to score published as a reference.
In addition, overclocked to 4GHz is a model by a 888MHz / memory clock to core clock This product will also be predicted performance and do not receive a step after the 550 Ti. Same 128bit memory bus width is 640 and for the same, it may say 640 but a good rival.
? Mark the relatively good score in DirectX 11
Performace preset of "3DMark 11" First there is a (graph 1), has come (-2.7%) as far as a step close to 450 in both the overall score, score graphics, it can be said with quite good results. Kepler?????????????????????????????????
 |
| Graph [1] 3DMark 11 |
 |
| Graph [2] Heaven Benchmark 3.0 score |
 |
| [3] Heaven Benchmark 3.0 frame rate graph |
Also the result of (graph 4) DirectX of "Lost Planet 2" of 11 DirectX 11 enabled games benchmark, to mark the performance of around about 90% compared with GF PGTS450SuperOC/1GD5 FUJIN 2.1, showed a good score. Although there are two generations ago, would say with the results so far can be close to the GTS of handling up a notch in that NVIDIA, the name of Kepler is not ashamed of highly efficient architecture.
 |
| Graph [4] Lost Planet 2 (DX11) benchmark |
Benchmark "3DMark Vantage" 10 DirectX DirectX 9 compatible benchmark but (Graph 8), here is the GF PGTS450SuperOC/1GD5 FUJIN 2.1 (graph 5,6), "3DMark06" (graph 7), "Lost Planet 2" followed by The result was a little place to go. Over 80%, and led to the result of 3DMark06 SM 3.0 of WUXGA particularly good performance is only about 70% did not.
Of course, it's also optimized drivers seems to be in these benchmarks is light shader program itself, and has become a stumbling block rather large memory bandwidth. It has become particularly noticeable difference between the score of high-resolution, instead of GDDR5, the adoption of DDR3 memory will be missed.
 |
| Graph [5] 3DMark Vantage |
 |
| Graph [6] 3DMark Vantage Feature Test |
 |
| Graph [7] 3DMark06 |
 |
| Graph [8] Lost Planet 2 (DX9) Benchmarks |
Finally, the power consumption during idle and run but 3.0 Heaven Benchmark (Graph 9), idle time has left a very excellent results with 81W 39W, even when the load in the entire system. Even considering that this is a version overclocked to both products, "(of course, but comparisons in Heaven Benchmark) Daseru beating by the power consumption of less than half the performance of approximately 90%" It that is the impact of hard.
If this power, in 640 non-OC version, such as adopting a model with low TDP CPU also on the side of addition, if a little twist Korase, this will be able to drive in 1 AC Adapter 90W. Only that was also adopted for mobile truly is.
 |
| ????9????? |
 |
| [10] GPU temperature graph |
? Recommended for light use. DDR3 prices and neck is adopted
The above is carried out a very simple benchmark, it is impressive that "the percentage of low heat generation high-performance, low power consumption" than anything else. If you are getting high efficiency only this would be done to smooth alternation of generations of low-end.
Become a bottleneck of this product, and the lack of DDR3 memory bandwidth due to the adoption, the price of the product probably will. As is evident, with DDR3 memory bandwidth shortage has been pulling his feet from the bench results. Products with GDDR5 is regrettable in this issue is resolved, only to be expected better results than 450.
Prices, but has been released from ? 8,000 units, many models are more than 10,000 yen, in this price range even comes into view as well as 560 SE GeForce GTX 550 Ti GeForce GTX. In addition, it is also crowded market Radeon HD 7750/7750 of a rival. 640 enters the choice is multiplied if the balance power and performance, when considered in cost performance, it is divided into other products. Offered at the price you have, you become able to obtain less than 7,000 yen, the low-end will be decisive.
? NVIDIA website
http://www.nvidia.co.jp/
? Products
http://www.nvidia.co.jp/object/geforce-gt-640-oem-jp.html
? GIGABYTE website
http://www.gigabyte.jp/
? Product (sales CFD, Distributors)
http://www.cfd.co.jp/gigabyte/vga/gv-n640oc-2gi.html
? Related Articles
NVIDIA - June 4, 2012], "GeForce GT 640" of Kepler-based
http://pc.watch.impress.co.jp/docs/news/20120604_537590.html
(June 12, 2012)
[Takashi Liu Reported by]
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