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Gaming Performance Comparison

Recommended System Requirements
Game GeForce 8800 GTS EVGA SSC 640MB Edition GeForce GT 640
Cyberpunk 2077 521% 653%
Hitman 3 708% 880%
Assassins Creed: Valhalla 468% 589%
Call of Duty: Black Ops Cold War 450% 567%
FIFA 21 213% 280%
Grand Theft Auto VI 774% 960%
Far Cry 6 799% 990%
Genshin Impact 521% 653%
World of Warcraft: Shadowlands 791% 980%
Battlefield 6 708% 880%

In terms of overall gaming performance, the graphical capabilities of the Nvidia GeForce 8800 GTS EVGA SSC 640MB Edition are noticeably better than the Nvidia GeForce GT 640.

The GeForce GT 640 has a 326 MHz higher core clock speed and 8 more Texture Mapping Units than the 8800 GTS. This results in the GeForce GT 640 providing 15.1 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 326 MHz higher core clock speed but 4 fewer Render Output Units than the 8800 GTS. The lower ROP count doesn't matter, though, as altogether the GeForce GT 640 manages to provide 2.9 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 three years more recently than the 8800 GTS, and so the GeForce GT 640 is likely to have far better driver support, meaning it will be much more optimized and ultimately superior to the 8800 GTS when running the latest games.

The GeForce GT 640 has 1408 MB more video memory than the 8800 GTS, so is likely to be much better at displaying game textures at higher resolutions. However, overall, the 8800 GTS has superior memory performance.

The 8800 GTS has 43.5 GB/sec greater memory bandwidth than the GeForce GT 640, which means that the memory performance of the 8800 GTS is noticeably better than the GeForce GT 640.

The GeForce 8800 GTS EVGA SSC 640MB Edition has 96 Shader Processing Units and the GeForce GT 640 has 384. However, the actual shader performance of the 8800 GTS is 138 and the actual shader performance of the GeForce GT 640 is 346. The GeForce GT 640 having 208 better shader performance is not particularly notable, as altogether the 8800 GTS performs better when taking into account other relevant data.

The GeForce GT 640 transistor size technology is 62 nm (nanometers) smaller than the 8800 GTS. This means that the GeForce GT 640 is expected to run massively cooler and achieve higher clock frequencies than the 8800 GTS.

The GeForce 8800 GTS EVGA SSC 640MB Edition requires 143 Watts to run and the GeForce GT 640 requires 65 Watts. We would recommend a PSU with at least 400 Watts for the 8800 GTS and a PSU with at least 350 Watts for the GeForce GT 640. The 8800 GTS requires 78 Watts more than the GeForce GT 640 to run. The difference is significant enough that the 8800 GTS may have an adverse affect on your yearly electricity bills in comparison to the GeForce GT 640.

Game FPS Benchmarks On Ultra

GPU Architecture

Core Speed576 MHzvs902 MHz
Boost Clock-vs-
ArchitectureTesla G80Kepler GK107-300-A2
OC Potential Poor vs Fair
Driver Support Poor vs Good
Release Date01 Nov 2006vs05 Jun 2012
GPU LinkGD LinkGD Link

Resolution Performance

1366x768 - vs green tick
green tick vs
green tick vs
green tick vs green tick
vs green tick

GPU Memory

Memory640 MBvs2048 MB
Memory Speed900 MHzvs891 MHz
Memory Bus320 Bitvs128 Bit
Memory TypeGDDR3vsDDR3
Memory Bandwidth72GB/secvs28.5GB/sec
L2 Cache 0 KB vs green tick 256 KB
Delta Color Compression no vs no
Memory Performance 0% green tick vs green tick 0%

GPU Display

Shader Processing Units96vs384
Actual Shader Performance7%vs17%
Texture Mapping Units24vs32
Texture Rate13.8 GTexel/svs28.9 GTexel/s
Render Output Units20vs16
Pixel Rate11.5 GPixel/svs14.4 GPixel/s

GPU Outputs

Max Digital Resolution (WxH)2560x1600vs4096x2160
VGA Connections0vs1
DVI Connections2vs1
HDMI Connections0vs1
DisplayPort Connections-vs-

GPU Power Requirements

Max Power143 Wattsvs65 Watts
Recommended PSU400 Watts & 26 Ampsvs350 Watts & 26 Amps

GPU Features

Shader Model4.0vs5.0
Open GL3.3vs4.5
Open CL-vs-
Notebook GPUnono

GPU Supporting Hardware

Recommended ProcessorIntel Core 2 Extreme QX6700 2.66GHzvsIntel Core i3-3220 3.3GHz
Recommended RAM4 GBvs8 GB
Maximum Recommended Gaming Resolution1440x900vs1366x768

Gaming Performance Value

Performance Value

GPU Mini Review

Mini ReviewOverview
GeForce 8800 GTS EVGA SSC 640MB Edition is a special edition of NVIDIA's Performance GeForce 8800 GTS 640MB, created by EVGA.

Overclock: Central Unit
The Central Unit now runs at 576MHz, instead of 513MHz.

Overclock: Memory Clock
The Operating Memory Clock is now of 900MHz while the Frame Buffer remains the same.

Cooling Solution
The Cooling System remains the same.

Benchmarks indicate a 7% performance over the reference GeForce 8800 GTS 640MB.
GeForce GT 640 is a Middle-Class Graphics Card based on the first revision of the Kepler 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.

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.

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.

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.

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.
Recommended CPU
Possible GPU Upgrades
GPU Variants