Recommended System Requirements | ||
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Game | GeForce GT 640 | Radeon HD 6750 PowerColor Low Profile Dirt3 1GB Edition |
Hitman 3 | 880% | 674% |
Cyberpunk 2077 | 653% | 495% |
Assassins Creed: Valhalla | 589% | 444% |
Resident Evil 8 | 653% | 495% |
FIFA 21 | 280% | 200% |
Grand Theft Auto VI | 960% | 737% |
Call of Duty: Black Ops Cold War | 567% | 426% |
Genshin Impact | 653% | 495% |
Far Cry 6 | 990% | 761% |
The Medium | 840% | 642% |
In terms of overall gaming performance, the graphical capabilities of the AMD Radeon HD 6750 PowerColor Low Profile Dirt3 1GB Edition are noticeably better than the Nvidia GeForce GT 640.
The GeForce GT 640 has a 202 MHz higher core clock speed but 4 fewer Texture Mapping Units than the HD 6750. The lower TMU count doesn't matter, though, as altogether the GeForce GT 640 manages to provide 3.7 GTexel/s better texturing performance. This still holds weight but shader performance is generally more relevant, particularly since both of these GPUs support at least DirectX 10.
The GeForce GT 640 has a 202 MHz higher core clock speed than the HD 6750 and the same number of Render Output Units. This results in the GeForce GT 640 providing 3.2 GPixel/s better pixeling performance. However, both GPUs support DirectX 9 or above, and pixeling performance is only really relevant when comparing older cards.
The GeForce GT 640 was released over a year more recently than the HD 6750, and so the GeForce GT 640 is likely to have better driver support, meaning it will be more optimized for running the latest games when compared to the HD 6750.
The GeForce GT 640 has 1024 MB more video memory than the HD 6750, so is likely to be much better at displaying game textures at higher resolutions. However, overall, the HD 6750 has superior memory performance.
The HD 6750 has 45.1 GB/sec greater memory bandwidth than the GeForce GT 640, which means that the memory performance of the HD 6750 is noticeably better than the GeForce GT 640.
The GeForce GT 640 has 384 Shader Processing Units and the Radeon HD 6750 PowerColor Low Profile Dirt3 1GB Edition has 720. However, the actual shader performance of the GeForce GT 640 is 346 and the actual shader performance of the HD 6750 is 252. The GeForce GT 640 having 94 better shader performance is not particularly notable, as altogether the HD 6750 performs better when taking into account other relevant data.
The GeForce GT 640 transistor size technology is 12 nm (nanometers) smaller than the HD 6750. This means that the GeForce GT 640 is expected to run slightly cooler and achieve higher clock frequencies than the HD 6750.
The GeForce GT 640 requires 65 Watts to run and the Radeon HD 6750 PowerColor Low Profile Dirt3 1GB Edition requires 86 Watts. We would recommend a PSU with at least 350 Watts for the GeForce GT 640 and a PSU with at least 450 Watts for the HD 6750. The HD 6750 requires 21 Watts more than the GeForce GT 640 to run. The difference is not significant enough for the HD 6750 to have a noticeably larger impact on your yearly electricity bills than the GeForce GT 640.
Core Speed | 902 MHz | ![]() | vs | 700 MHz | |
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Boost Clock | - | vs | - | ||
Architecture | Kepler GK107-300-A2 | Terascale 2 Juniper PRO | |||
OC Potential | Fair |
![]() |
vs | Fair | |
Driver Support | Good |
![]() | vs | Poor | |
Release Date | 05 Jun 2012 | ![]() | vs | 01 Apr 2011 | |
GPU Link | GD Link | GD Link | |||
Approved | ![]() | ![]() | |||
Comparison |
1366x768 | 6.6
|
![]() |
vs | - | |
---|---|---|---|---|---|
1600x900 | 5.1
|
vs | ![]() |
5.5
|
|
1920x1080 | 3.5
|
vs | ![]() |
4.2
|
|
2560x1440 | 2.5
|
vs | ![]() |
2.7
|
|
3840x2160 | 1.7
|
![]() |
vs | - |
Memory | 2048 MB | ![]() | vs | 1024 MB | |
---|---|---|---|---|---|
Memory Speed | 891 MHz | vs | ![]() | 1150 MHz | |
Memory Bus | 128 Bit | ![]() | vs | ![]() | 128 Bit |
Memory Type | DDR3 | vs | ![]() | GDDR5 | |
Memory Bandwidth | 28.5GB/sec | vs | ![]() | 73.6GB/sec | |
L2 Cache | 256 KB | ![]() |
vs | ![]() |
256 KB |
Delta Color Compression | no | vs | no | ||
Memory Performance | 0% | ![]() |
vs | ![]() |
0% |
Comparison |
Shader Processing Units | 384 | vs | ![]() | 720 | |
---|---|---|---|---|---|
Actual Shader Performance | 17% | ![]() | vs | 12% | |
Technology | 28nm | ![]() | vs | 40nm | |
Texture Mapping Units | 32 | vs | ![]() | 36 | |
Texture Rate | 28.9 GTexel/s | ![]() | vs | 25.2 GTexel/s | |
Render Output Units | 16 | ![]() | vs | ![]() | 16 |
Pixel Rate | 14.4 GPixel/s | ![]() | vs | 11.2 GPixel/s | |
Comparison |
Max Digital Resolution (WxH) | 4096x2160 | ![]() | vs | 2560x1600 | |
---|---|---|---|---|---|
VGA Connections | 1 | ![]() | vs | ![]() | 1 |
DVI Connections | 1 | ![]() | vs | ![]() | 1 |
HDMI Connections | 1 | ![]() | vs | ![]() | 1 |
DisplayPort Connections | - | vs | - | ||
Comparison |
Max Power | 65 Watts | ![]() | vs | 86 Watts | |
---|---|---|---|---|---|
Recommended PSU | 350 Watts & 26 Amps | ![]() | vs | 450 Watts & 30 Amps |
DirectX | 12.0 | ![]() | vs | 11.0 | |
---|---|---|---|---|---|
Shader Model | 5.0 | ![]() | vs | ![]() | 5.0 |
Open GL | 4.5 | ![]() | vs | 4.3 | |
Open CL | - | vs | - | ||
Notebook GPU | no | no | |||
SLI/Crossfire | no | vs | ![]() | yes | |
Dedicated | yes | ![]() | vs | ![]() | yes |
Comparison |
Recommended Processor | Intel Core i3-3220 3.3GHz | vs | ![]() | Intel Core i3-530 2.9GHz | |
---|---|---|---|---|---|
Recommended RAM | 8 GB | vs | ![]() | 4 GB | |
Maximum Recommended Gaming Resolution | 1366x768 | vs | ![]() | 1600x900 |
Performance Value | ![]() |
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Mini Review | Overview GeForce GT 640 is a Middle-Class Graphics Card based on the first revision of the Kepler Architecture. Architecture The Kepler Architecture was NVIDIA's big step to power efficiency. Each Stream Multiprocessor (SMX) now hosts 192 Shader Processing Units - against the 48 of older Fermi Architecture, and has been redesigned being now clocked at the same speed of the Central Unit. This means they are more energy efficient and will consequently lead to cooler operating temperatures. However, it also means they are weaker. It can be said that one Fermi SMX is as fast as 2 Kepler SMXs. Additionally, and not available in all GPUs, Kepler also introduced the Boost Clock Feature. The Boost Clock is an even higher Clock Speed activated when in gaming mode and becomes the effective speed of the GPU. GPU It equips a GPU Codenamed GK107-300-A2 which has 2 Stream Multiprocessor activated and thus offers 384 Shader Processing Units, 32 TMUs and 16 ROPs. The Central Unit is clocked at 902MHz. Memory The GPU accesses a 2GB frame buffer of DDR3, through a 128-bit memory interface. The size of the frame buffer is exaggerated and in no way benefits the GPU. The Memory Clock Operates at 891MHz. Features DirectX 11.0 Support (11.0 Hardware Default) and support for Optimus, CUDA, OpenCL, DirectCompute, 3D Vision Surround, PhysX, Realtime Raytracing and other technologies Power Consumption With a rated board TDP of 65W, it requires at least a 350W PSU and it relies entirely on the PCI Slot for power, meaning no extra connectors are required. Performance Gaming benchmarks put its performance on average with Radeon HD 6670. System Suggestions We recommend a Modest Processor (Intel Core i3) and 8GB of RAM for a system with GeForce GT 640. | Overview Radeon HD 6750 PowerColor Low Profile Dirt3 1GB Edition is a special edition of AMD's fast-middle-class Radeon HD 6750, created by PowerColor. It doesn't have any new features. Read below to know more. Overclock Out of The Box The Clock Frequencies of both Central Unit and Operating Memory Clock Remain the Same. Cooling Solution The Cooling System remains the same. Performance Without Overclocking Out of The Box, Radeon HD 6750 PowerColor Low Profile Dirt3 1GB Edition is as fast as the reference Radeon HD 6750. |
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Recommended CPU | |||||
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Possible GPU Upgrades | |||||
GPU Variants | - |