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Gaming Performance Comparison

In terms of overall gaming performance, the graphical capabilities of the Nvidia GeForce 8800 GTS 640MB are noticeably better than the Nvidia GeForce GT 630 2GB DDR3.

The GT 630 has a 297 MHz higher core clock speed but 8 fewer Texture Mapping Units than the 8800 GTS. The lower TMU count doesn't matter, though, as altogether the GT 630 manages to provide 0.7 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 GT 630 has a 297 MHz higher core clock speed than the 8800 GTS, but the 8800 GTS has 16 more Render Output Units than the GT 630. As a result, the 8800 GTS exhibits a 7.1 GPixel/s better Pixel Fill Rate than the GT 630. However, both GPUs support DirectX 9 or above, and pixeling performance is only really relevant when comparing older cards.

The GT 630 was released over three years more recently than the 8800 GTS, and so the GT 630 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 GT 630 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, the overall memory performance is about the same.

The 8800 GTS has 34.6 GB/sec greater memory bandwidth than the GT 630, which means that the memory performance of the 8800 GTS is noticeably better than the GT 630.

Both the GeForce GT 630 2GB DDR3 and the GeForce 8800 GTS 640MB have 96 Shader Processing Units. While the two GPUs have the same number of SPUs, the actual performance delivered by the . Knowing that the shader performance of the GT 630 is superior, it is not necessary to examine the GPUs' respective Texture and Pixel Fill Rates.

The GT 630 transistor size technology is 50 nm (nanometers) smaller than the 8800 GTS. This means that the GT 630 is expected to run much cooler and achieve higher clock frequencies than the 8800 GTS.

The GeForce 8800 GTS 640MB requires 143 Watts to run but there is no entry for the GT 630. We would recommend a PSU with at least 400 Watts for the 8800 GTS, but we do not have a recommended PSU wattage for the GT 630.

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GPU Core Details

Core Speed810 MHzvs513 MHz
ArchitectureFermi GF108Tesla G80
Notebook GPUnono
Release Date01 May 201201 Nov 2006
GPU LinkGD LinkGD Link

GPU Memory

Memory2048 MBvs640 MB
Memory Speed900 MHzvs792 MHz
Memory Bus128 Bitvs320 Bit
Memory TypeDDR3vsGDDR3
Memory Bandwidth28.8GB/secvs63.4GB/sec
L2 Cache 256 KB green tick vs -

GPU Display

Shader Processing Units96vs96
Actual Shader Performance156vs123
Texture Mapping Units16vs24
Texture Rate13 GTexel/svs12.3 GTexel/s
Render Output Units4vs20
Pixel Rate3.2 GPixel/svs10.3 GPixel/s

GPU Display Tech

Shader Model5.0vs4.0
Open GL4.2vs2.1
Max Resolution (WxH)2560x1600vs2560x1600
VGA Connections1vs0
DVI Connections1vs2
HDMI Connections1vs0

GPU Power Requirements

Max Power-143 Watts

GPU Supporting Hardware

Recommended RAM4 GBvs4 GB
Recommended Screen Size1366x7681440x900
Recommended PSU-400 Watts & 26 Amps

Gaming Performance Value

Performance Value

GPU Mini Review

Mini ReviewGeForce GT 630 2GB DDR3 is another version of middle-class GeForce GT 630.
This version comes equipped with a 2GB frame buffer whilst the other specifications are exactly like the standard GeForce GT 630.
Therefore, GeForce GT 630 2GB DDR3 can be addressed as a gimmick: marketing to lure consumers into paying more for the same product as GeForce GT 630 2GB DDR3 is not powerful enough to use 2GB of frame buffer, due to its limited bandwidth and processing power.
GeForce 8800 GTS 640MB is a high-end GFX based on the 90nm variant of the first-shader unified architecture.
It's based on the G80 Core and offers 96 Shader Processing Units, 24 TMUs and 20 ROPs, on a 320-bit memory interface of GDDR3. The central unit runs at 513MHz and the memory clock operates 792MHz. It will consume no more than 143 Watt.
Technically, next in series, when compared to GeForce 8800 GT, it performs worse as the amount of Shader Processing Units and TMUs was reduced and the GPU comes under-clocked, in exchange for a wider bus-width and extra video memory.
Today's modern demanding games can be played at medium (most) or high settings (some) smoothly. However, DirectX 11 based games aren't supported.
Recommended CPUAMD Opteron 8214
AMD Opteron 8214 HE
Intel Pentium 4 HT 670
Intel Pentium 4 HT 672
Intel Pentium D Extreme Edition 3.73GHz
AMD Opteron 2435
AMD APU A8-5500B Quad-Core
AMD APU A8-5500 Quad-Core
AMD Opteron 3350 HE
Intel Xeon Processor X5470
Possible GPU Upgrades-GeForce GTX 460 Asus DirectCU II 1GB Edition
GeForce GTX 460 Galaxy WHDI Edition
GeForce GTX 460
GeForce GT 645 (OEM)
Quadro K2200
GPU Variants--