Select any two GPUs for comparison
VS

Gaming Performance Comparison

Recommended System Requirements
Game GeForce GT 640 v3 Zotac 2GB Edition Radeon HD 3850 X3
Halo: Reach 100% 96%
Cyberpunk 2077 765% 748%
Red Dead Redemption 2 529% 517%
Dragon Ball Z Kakarot 288% 281%
Call of Duty: Modern Warfare 529% 517%
Doom Eternal 441% 431%
Microsoft Flight Simulator 765% 748%
Grand Theft Auto VI 862% 843%
FIFA 20 235% 229%
Need For Speed Heat 529% 517%

In terms of overall gaming performance, the graphical capabilities of the AMD Radeon HD 3850 X3 are marginally better than the Nvidia GeForce GT 640 v3 Zotac 2GB Edition.

The GT 640 has a 377 MHz higher core clock speed than the HD 3850, but the HD 3850 has 32 more Texture Mapping Units than the GT 640. As a result, the HD 3850 exhibits a 15.4 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 377 MHz higher core clock speed than the HD 3850, but the HD 3850 has 40 more Render Output Units than the GT 640. As a result, the HD 3850 exhibits a 23.7 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 HD 3850, 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 HD 3850 when running the latest games.

The GT 640 has 512 MB more video memory than the HD 3850, 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 HD 3850 has 123.1 GB/sec greater memory bandwidth than the GT 640, which means that the memory performance of the HD 3850 is massively better than the GT 640.

The GeForce GT 640 v3 Zotac 2GB Edition has 384 Shader Processing Units and the Radeon HD 3850 X3 has 960. However, the actual shader performance of the GT 640 is 402 and the actual shader performance of the HD 3850 is 642. The HD 3850 having 240 better shader performance and an altogether better performance when taking into account other relevant data means that the HD 3850 delivers a massively smoother and more efficient experience when processing graphical data than the GT 640.

The GT 640 transistor size technology is 27 nm (nanometers) smaller than the HD 3850. This means that the GT 640 is expected to run slightly cooler and achieve higher clock frequencies than the HD 3850. While they exhibit similar graphical performance, the GT 640 should consume less power than the HD 3850.

The GeForce GT 640 v3 Zotac 2GB Edition requires 49 Watts to run and the Radeon HD 3850 X3 requires 145 Watts. We would recommend a PSU with at least 350 Watts for the GT 640. The HD 3850 requires 96 Watts more than the GT 640 to run. The difference is significant enough that the HD 3850 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 MHzvs669 MHz
Boost Clock-vs-
ArchitectureKepler GK208-400-A1RV670 PRO
OC Potential Poor vs Fair
Driver Support Good vs -
Release Date29 May 2013vs10 Apr 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 MBvs1536 MB
Memory Speed1252 MHzvs850 MHz
Memory Bus64 Bitvs768 Bit
Memory TypeGDDR5vsGDDR3
Memory Bandwidth40.1GB/secvs163.2GB/sec
L2 Cache 128 KB green tick vs -
Delta Color Compression no vs no
Memory Performance 0% green tick vs green tick 0%
Comparison

GPU Display

Shader Processing Units384vs960
Actual Shader Performance19%vs31%
Technology28nmvs55nm
Texture Mapping Units16vs48
Texture Rate16.7 GTexel/svs32.1 GTexel/s
Render Output Units8vs48
Pixel Rate8.4 GPixel/svs32.1 GPixel/s
Comparison

GPU Outputs

Max Digital Resolution (WxH)4096x2160vs2560x1600
VGA Connections1vs0
DVI Connections1vs4
HDMI Connections1vs0
DisplayPort Connections-vs-
Comparison

GPU Power Requirements

Max Power49 Wattsvs145 Watts
Recommended PSU350 Watts & 26 Amps-

GPU Features

DirectX12.0vs10.1
Shader Model5.0vs4.1
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 Duo E6850 3.0GHz
Recommended RAM8 GBvs6 GB
Maximum Recommended Gaming Resolution1366x768vs1366x768

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.
Radeon HD 3850 X3 (not Crossfire) is a triple-graphics solution of three Radeon HD 3850.
This combination, also known as Radeon HD 3850 Trinity, is expected to offer almost the same performance as Radeon HD 3850 3-Way-Crossfired while consuming slightly less power. However, and just like Crossfire, its performance also relies a lot on proper driver support.
Some of today's modern demanding games might be playable using the high preset but most will require reduced settings. However, DirectX 11 games aren't supported.
Recommended CPU
Possible GPU Upgrades
GPU Variants
-
-

Title

Body