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Gaming Performance Comparison

Recommended System Requirements
Game GeForce 9800 GT 1GB GeForce GT 640 v3 Zotac 2GB Edition
Cyberpunk 2077 778% 765%
Red Dead Redemption 2 539% 529%
Dragon Ball Z Kakarot 294% 288%
Halo: Reach 103% 100%
Microsoft Flight Simulator 778% 765%
Call of Duty: Modern Warfare 539% 529%
FIFA 20 240% 235%
Doom Eternal 449% 441%
Grand Theft Auto VI 876% 862%
Need For Speed Heat 539% 529%

In terms of overall gaming performance, the graphical capabilities of the Nvidia GeForce GT 640 v3 Zotac 2GB Edition are marginally better than the Nvidia GeForce 9800 GT 1GB.

The GT 640 has a 446 MHz higher core clock speed than the 9800 GT, but the 9800 GT has 40 more Texture Mapping Units than the GT 640. As a result, the 9800 GT exhibits a 16.9 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 446 MHz higher core clock speed than the 9800 GT, but the 9800 GT has 8 more Render Output Units than the GT 640. As a result, the 9800 GT exhibits a 1.2 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 9800 GT, 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 9800 GT when running the latest games.

The GT 640 has 1024 MB more video memory than the 9800 GT, 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 9800 GT has 17.5 GB/sec greater memory bandwidth than the GT 640, which means that the memory performance of the 9800 GT is slightly better than the GT 640.

The GeForce 9800 GT 1GB has 112 Shader Processing Units and the GeForce GT 640 v3 Zotac 2GB Edition has 384. However, the actual shader performance of the 9800 GT is 168 and the actual shader performance of the GT 640 is 402. The GT 640 having 234 better shader performance is not particularly notable, as altogether the 9800 GT performs better when taking into account other relevant data.

The GT 640 transistor size technology is 37 nm (nanometers) smaller than the 9800 GT. This means that the GT 640 is expected to run much cooler and achieve higher clock frequencies than the 9800 GT. While they exhibit similar graphical performance, the GT 640 should consume less power than the 9800 GT.

The GeForce 9800 GT 1GB requires 105 Watts to run and the GeForce GT 640 v3 Zotac 2GB Edition requires 49 Watts. We would recommend a PSU with at least 400 Watts for the 9800 GT and a PSU with at least 350 Watts for the GT 640. The 9800 GT requires 56 Watts more than the GT 640 to run. The difference is significant enough that the 9800 GT may have an adverse affect on your yearly electricity bills in comparison to the GT 640.

Game FPS Benchmarks On Ultra

GPU Architecture

Core Speed600 MHzvs1046 MHz
Boost Clock-vs-
ArchitectureTesla G92-270-A2Kepler GK208-400-A1
OC Potential Fair vs Poor
Driver Support Poor vs Good
Release Date21 Jul 2008vs29 May 2013
GPU LinkGD LinkGD Link

Resolution Performance

green tick vs -
green tick vs
green tick vs green tick
vs green tick
3840x2160 - vs green tick

GPU Memory

Memory1024 MBvs2048 MB
Memory Speed900 MHzvs1252 MHz
Memory Bus256 Bitvs64 Bit
Memory TypeGDDR3vsGDDR5
Memory Bandwidth57.6GB/secvs40.1GB/sec
L2 Cache 0 KB vs green tick 128 KB
Delta Color Compression no vs no
Memory Performance 0% green tick vs green tick 0%

GPU Display

Shader Processing Units112vs384
Actual Shader Performance8%vs19%
Texture Mapping Units56vs16
Texture Rate33.6 GTexel/svs16.7 GTexel/s
Render Output Units16vs8
Pixel Rate9.6 GPixel/svs8.4 GPixel/s

GPU Outputs

Max Digital Resolution (WxH)2560x1600vs4096x2160
VGA Connections0vs1
DVI Connections2vs1
HDMI Connections0vs1
DisplayPort Connections0vs-

GPU Power Requirements

Max Power105 Wattsvs49 Watts
Recommended PSU400 Watts & 27 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 Quad Q6600 2.4GHzvsIntel Core i3-3220 3.3GHz
Recommended RAM4 GBvs8 GB
Maximum Recommended Gaming Resolution1366x768vs1366x768

Gaming Performance Value

Performance Value

GPU Mini Review

Mini ReviewOverview
GeForce 9800 GT 1GB is a High-End Graphics Card based on the first revision of the Tesla Architecture.

Tesla was NVIDIA's First Unified Shader Architecture.

It equips a GPU Codenamed G92-270-A2 which has 7 Stream Multiprocessors activated and thus offers 112 Shader Processing Units, 56 TMUs and 16 ROPs. The Central Unit is clocked at 600MHz.

The GPU accesses a 1GB frame buffer of GDDR3, through a 256-bit memory interface. The size of the frame buffer is adequate. The Memory Clock Operates at 900MHz.

DirectX 10.0 Support (10.0 Hardware Default) and support for SLI, NVIDIA PureVideo HD Technology, Dual-stream Hardware Acceleration, PhysX, CUDA, HybridPower and other technologies.

Cooling Solution
The Cooling Solution consists of a Single-Fan.

Power Consumption
With a rated board TDP of 105W, it requires at least a 400W PSU and it requires at least one 6-pin available connectors.

GeForce 9800 GT 1GB offers better performance than GeForce 9800 GT 512MB at resolutions over 1600x900.
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.

Without Overclocking Out of The Box, GeForce GT 640 v3 Zotac 2GB Edition is as fast as the reference GeForce GT 640 v3.
Recommended CPU
Possible GPU Upgrades
GPU Variants