Select any two GPUs for comparison
VS

Gaming Performance Comparison

Recommended System Requirements
Game GeForce GT 640 v3 Zotac 2GB Edition GeForce 9800 GX2
Halo: Reach 100% 69%
Cyberpunk 2077 765% 629%
Red Dead Redemption 2 529% 430%
Dragon Ball Z Kakarot 288% 227%
Call of Duty: Modern Warfare 529% 430%
Microsoft Flight Simulator 765% 629%
Doom Eternal 441% 356%
Grand Theft Auto VI 862% 711%
FIFA 20 235% 183%
Need For Speed Heat 529% 430%

In terms of overall gaming performance, the graphical capabilities of the Nvidia GeForce 9800 GX2 are noticeably better than the Nvidia GeForce GT 640 v3 Zotac 2GB Edition.

The GT 640 has a 446 MHz higher core clock speed than the GeForce 9800 GX2, but the GeForce 9800 GX2 has 112 more Texture Mapping Units than the GT 640. As a result, the GeForce 9800 GX2 exhibits a 60.1 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 446 MHz higher core clock speed than the GeForce 9800 GX2, but the GeForce 9800 GX2 has 24 more Render Output Units than the GT 640. As a result, the GeForce 9800 GX2 exhibits a 10.8 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 9800 GX2, 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 9800 GX2 when running the latest games.

The GT 640 has 1024 MB more video memory than the GeForce 9800 GX2, 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 9800 GX2 has 87.9 GB/sec greater memory bandwidth than the GT 640, which means that the memory performance of the GeForce 9800 GX2 is much better than the GT 640.

The GeForce GT 640 v3 Zotac 2GB Edition has 384 Shader Processing Units and the GeForce 9800 GX2 has 256. However, the actual shader performance of the GT 640 is 402 and the actual shader performance of the GeForce 9800 GX2 is 154. The GT 640 having 248 better shader performance is not particularly notable, as altogether the GeForce 9800 GX2 performs better when taking into account other relevant data.

The GT 640 transistor size technology is 37 nm (nanometers) smaller than the GeForce 9800 GX2. This means that the GT 640 is expected to run much cooler and achieve higher clock frequencies than the GeForce 9800 GX2.

The GeForce GT 640 v3 Zotac 2GB Edition requires 49 Watts to run and the GeForce 9800 GX2 requires 197 Watts. We would recommend a PSU with at least 350 Watts for the GT 640 and a PSU with at least 580 Watts for the GeForce 9800 GX2. The GeForce 9800 GX2 requires 148 Watts more than the GT 640 to run. The difference is significant enough that the GeForce 9800 GX2 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 MHzvs600 MHz
Boost Clock-vs-
ArchitectureKepler GK208-400-A1G92 (x2)
OC Potential Poor vs Poor
Driver Support Good vs -
Release Date29 May 2013vs01 Mar 2008
GPU LinkGD LinkGD Link
Approved
Comparison

Resolution Performance

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

GPU Memory

Memory2048 MBvs1024 MB
Memory Speed1252 MHzvs1000 MHz
Memory Bus64 Bitvs512 Bit
Memory TypeGDDR5vsGDDR3
Memory Bandwidth40.1GB/secvs128GB/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 Units384vs256
Actual Shader Performance19%vs7%
Technology28nmvs65nm
Texture Mapping Units16vs128
Texture Rate16.7 GTexel/svs76.8 GTexel/s
Render Output Units8vs32
Pixel Rate8.4 GPixel/svs19.2 GPixel/s
Comparison

GPU Outputs

Max Digital Resolution (WxH)4096x2160vs2560x1600
VGA Connections1vs0
DVI Connections1vs2
HDMI Connections1vs1
DisplayPort Connections-vs-
Comparison

GPU Power Requirements

Max Power49 Wattsvs197 Watts
Recommended PSU350 Watts & 26 Ampsvs580 Watts & 35 Amps

GPU Features

DirectX12.0vs10
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 3.3GHzvsIntel Core 2 Quad Q9650 3.0GHz
Recommended RAM8 GBvs8 GB
Maximum Recommended Gaming Resolution1366x768vs1920x1080

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.
With two on-board GPUs, a GeForce 9800 GX2-based graphics solution is bar-none the fastest graphics card available, and when paired with a 7 Series NVIDIA nForce motherboard, creates the latest in a line of powerful NVIDIA gaming platforms. Be blown away by scorching frame rates, true-to-life extreme HD gaming, and picture-perfect Blu-ray and HD DVD movies.
Recommended CPU
Possible GPU Upgrades
GPU Variants
-
-

Title

Body