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Gaming Performance Comparison

Recommended System Requirements
Game GeForce GT 640 v3 Zotac 2GB Edition GeForce 8800 Ultra
Red Dead Redemption 2 529% 410%
Doom Eternal 441% 338%
Cyberpunk 2077 765% 600%
Call of Duty: Modern Warfare 529% 410%
Dragon Ball Z Kakarot 288% 214%
Microsoft Flight Simulator 765% 600%
Star Wars: Jedi - Fallen Order 765% 600%
Grand Theft Auto VI 862% 679%
Need For Speed Heat 529% 410%
Warcraft 3: Reforged 76% 80%

In terms of overall gaming performance, the graphical capabilities of the Nvidia GeForce 8800 Ultra are noticeably better than the Nvidia GeForce GT 640 v3 Zotac 2GB Edition.

The GT 640 has a 434 MHz higher core clock speed than the GeForce 8800 Ultra, but the GeForce 8800 Ultra has 16 more Texture Mapping Units than the GT 640. As a result, the GeForce 8800 Ultra exhibits a 2.9 GTexel/s better Texture Fill Rate than the GT 640. This still holds weight but shader performance is generally more relevant, particularly since both of these GPUs support at least DirectX 10.

The GT 640 has a 434 MHz higher core clock speed than the GeForce 8800 Ultra, but the GeForce 8800 Ultra has 16 more Render Output Units than the GT 640. As a result, the GeForce 8800 Ultra exhibits a 6.3 GPixel/s better Pixel Fill Rate than the GT 640. However, both GPUs support DirectX 9 or above, and pixeling performance is only really relevant when comparing older cards.

The GT 640 was released over three years more recently than the GeForce 8800 Ultra, and so the GT 640 is likely to have far better driver support, meaning it will be much more optimized and ultimately superior to the GeForce 8800 Ultra when running the latest games.

The GT 640 has 1280 MB more video memory than the GeForce 8800 Ultra, so is likely to be much better at displaying game textures at higher resolutions. This is supported by the fact that the GT 640 also has superior memory performance overall.

The GeForce 8800 Ultra has 63.6 GB/sec greater memory bandwidth than the GT 640, which means that the memory performance of the GeForce 8800 Ultra is much better than the GT 640.

The GeForce GT 640 v3 Zotac 2GB Edition has 384 Shader Processing Units and the GeForce 8800 Ultra has 128. However, the actual shader performance of the GT 640 is 402 and the actual shader performance of the GeForce 8800 Ultra is 196. The GT 640 having 206 better shader performance is not particularly notable, as altogether the GeForce 8800 Ultra performs better when taking into account other relevant data.

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

The GeForce GT 640 v3 Zotac 2GB Edition requires 49 Watts to run and the GeForce 8800 Ultra requires 172 Watts. We would recommend a PSU with at least 350 Watts for the GT 640 and a PSU with at least 500 Watts for the GeForce 8800 Ultra. The GeForce 8800 Ultra requires 123 Watts more than the GT 640 to run. The difference is significant enough that the GeForce 8800 Ultra may have an adverse affect on your yearly electricity bills in comparison to the GT 640.

Game FPS Benchmarks On Ultra

GPU Architecture

Core Speed1046 MHzvs612 MHz
Boost Clock-vs-
ArchitectureKepler GK208-400-A1Tesla G80
OC Potential Poor vs Poor
Driver Support Good vs Poor
Release Date29 May 2013vs01 May 2007
GPU LinkGD LinkGD Link
Approved
Comparison

Resolution Performance

1366x768 - green tick vs green tick -
1600x900
5.2
vs green tick
6.1
1920x1080
3.9
vs green tick
4.5
2560x1440
2.6
green tick vs green tick
2.6
3840x2160
1.8
green tick vs
1.7

GPU Memory

Memory2048 MBvs768 MB
Memory Speed1252 MHzvs1080 MHz
Memory Bus64 Bitvs384 Bit
Memory TypeGDDR5vsGDDR3
Memory Bandwidth40.1GB/secvs103.7GB/sec
L2 Cache 128 KB green tick vs 0 KB
Delta Color Compression no vs no
Memory Performance 0% green tick vs green tick 0%
Comparison

GPU Display

Shader Processing Units384vs128
Actual Shader Performance19%vs9%
Technology28nmvs90nm
Texture Mapping Units16vs32
Texture Rate16.7 GTexel/svs19.6 GTexel/s
Render Output Units8vs24
Pixel Rate8.4 GPixel/svs14.7 GPixel/s
Comparison

GPU Outputs

Max Digital Resolution (WxH)4096x2160vs2560x1600
VGA Connections1vs0
DVI Connections1vs2
HDMI Connections1vs0
DisplayPort Connections-vs-
Comparison

GPU Power Requirements

Max Power49 Wattsvs172 Watts
Recommended PSU350 Watts & 26 Ampsvs500 Watts & 35 Amps

GPU Features

DirectX12.0vs10.0
Shader Model5.0vs4.0
Open GL4.5vs3.3
Open CL-vs-
Notebook GPUnono
SLI/Crossfirenovsyes
Dedicatedyesvsyes
Comparison

GPU Supporting Hardware

Recommended ProcessorIntel Core i3-3220 3.3GHz-
Recommended RAM8 GBvs6 GB
Maximum Recommended Gaming Resolution1366x768vs1680x1050

Gaming Performance Value

Performance Value

GPU Mini Review

Mini ReviewOverview
GeForce GT 640 v3 Zotac 2GB Edition is a special edition of NVIDIA's Middle-Class GeForce GT 640 v3, created by Zotac.

Overclock: Central Unit
The Central Unit runs at the same speed.

Overclock: Memory Clock
The Operating Memory Clock and the Frame Buffer remain the same.

Cooling Solution
The Cooling System has been replaced by Zotac's Silent Cooling Solution.

Performance
Without Overclocking Out of The Box, GeForce GT 640 v3 Zotac 2GB Edition is as fast as the reference GeForce GT 640 v3.
GeForce 8800 Ultra is a high-end GFX and the most powerful GPU of the GeForce 8000 Series, based on the 90nm variant of the first-shader unified architecture.
It's based on the G80 Core (same used on 8800 GTX) and offers 128 Shader Processing Units, 32 TMUs and 24 ROPs, on a 384-bit memory interface of GDDR3. The central unit runs at 612MHz and the memory clock operates 1080MHz. It will consume no more than 172 Watt.
It can be addressed as a further clocked GeForce 8800 GTX and is known to heat a lot. As the most powerful GPU in 2007, even today's modern demanding games can be played at medium or high settings smoothly. However, DirectX 11 based games aren't supported.
Recommended CPU
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Possible GPU Upgrades
GPU Variants
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