Select any two GPUs for comparison
VS

Gaming Performance Comparison

Recommended System Requirements
Game Radeon HD 4850 HIS iCooler IV 1GB Edition GeForce GT 640 v3 Zotac 2GB Edition
Cyberpunk 2077 654% 765%
Halo: Reach 74% 100%
Red Dead Redemption 2 449% 529%
Call of Duty: Modern Warfare 449% 529%
Doom Eternal 372% 441%
Dragon Ball Z Kakarot 238% 288%
Microsoft Flight Simulator 654% 765%
FIFA 20 192% 235%
Need For Speed Heat 449% 529%
Grand Theft Auto VI 738% 862%

In terms of overall gaming performance, the graphical capabilities of the AMD Radeon HD 4850 HIS iCooler IV 1GB Edition are very slightly better than the Nvidia GeForce GT 640 v3 Zotac 2GB Edition.

The GT 640 has a 421 MHz higher core clock speed than the HD 4850, but the HD 4850 has 24 more Texture Mapping Units than the GT 640. As a result, the HD 4850 exhibits a 8.3 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 421 MHz higher core clock speed than the HD 4850, but the HD 4850 has 8 more Render Output Units than the GT 640. As a result, the HD 4850 exhibits a 1.6 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 4850, 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 4850 when running the latest games.

The GT 640 has 1024 MB more video memory than the HD 4850, 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 4850 has 23.5 GB/sec greater memory bandwidth than the GT 640, which means that the memory performance of the HD 4850 is slightly better than the GT 640.

The Radeon HD 4850 HIS iCooler IV 1GB Edition has 800 Shader Processing Units and the GeForce GT 640 v3 Zotac 2GB Edition has 384. However, the actual shader performance of the HD 4850 is 350 and the actual shader performance of the GT 640 is 402. The GT 640 having 52 better shader performance is not particularly notable, as altogether the HD 4850 performs better when taking into account other relevant data.

The GT 640 transistor size technology is 27 nm (nanometers) smaller than the HD 4850. This means that the GT 640 is expected to run slightly cooler and achieve higher clock frequencies than the HD 4850.

The Radeon HD 4850 HIS iCooler IV 1GB Edition requires 110 Watts to run and the GeForce GT 640 v3 Zotac 2GB Edition requires 49 Watts. We would recommend a PSU with at least 450 Watts for the HD 4850 and a PSU with at least 350 Watts for the GT 640. The HD 4850 requires 61 Watts more than the GT 640 to run. The difference is significant enough that the HD 4850 may have an adverse affect on your yearly electricity bills in comparison to the GT 640.

Game FPS Benchmarks On Ultra

GPU Architecture

Core Speed625 MHzvs1046 MHz
Boost Clock-vs-
ArchitectureR700 RV770 PROKepler GK208-400-A1
OC Potential - vs Poor
Driver Support Poor vs Good
Release Date01 Jun 2008vs29 May 2013
GPU LinkGD LinkGD Link
Approved
Comparison

Resolution Performance

1366x768 - green tick vs green tick -
1600x900
5.7
green tick vs
5.2
1920x1080
4.3
green tick vs
3.9
2560x1440
2.5
vs green tick
2.6
3840x2160
1.7
vs green tick
1.8

GPU Memory

Memory1024 MBvs2048 MB
Memory Speed993 MHzvs1252 MHz
Memory Bus256 Bitvs64 Bit
Memory TypeGDDR3vsGDDR5
Memory Bandwidth63.6GB/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%
Comparison

GPU Display

Shader Processing Units800vs384
Actual Shader Performance17%vs19%
Technology55nmvs28nm
Texture Mapping Units40vs16
Texture Rate25 GTexel/svs16.7 GTexel/s
Render Output Units16vs8
Pixel Rate10 GPixel/svs8.4 GPixel/s
Comparison

GPU Outputs

Max Digital Resolution (WxH)2560x1600vs4096x2160
VGA Connections1vs1
DVI Connections1vs1
HDMI Connections1vs1
DisplayPort Connections-vs-
Comparison

GPU Power Requirements

Max Power110 Wattsvs49 Watts
Recommended PSU450 Watts & 30 Ampsvs350 Watts & 26 Amps

GPU Features

DirectX10.1vs12.0
Shader Model4.1vs5.0
Open GL3.3vs4.5
Open CL-vs-
Notebook GPUnono
SLI/Crossfireyesvsno
Dedicatedyesvsyes
Comparison

GPU Supporting Hardware

Recommended ProcessorIntel Core 2 Duo E8600 3.33GHzvsIntel Core i3-3220 3.3GHz
Recommended RAM6 GBvs8 GB
Maximum Recommended Gaming Resolution1440x900vs1366x768

Gaming Performance Value

Performance Value

GPU Mini Review

Mini ReviewOverview
Radeon HD 4850 HIS iCooler IV 1GB Edition is a special edition of AMD's High-End Radeon HD 4850, created by HIS.

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

Overclock: Memory Clock
The Operating Memory Clock remains the same while the Frame Buffer was doubled to 1GB: a gimmick which doesn't yield any performance boost and can be considered market to lure consumers into paying more for the same product.

Cooling Solution
The Cooling System remains the same.

Performance
Without any overclocking out of the box, Radeon HD 4850 HIS iCooler IV 1GB Edition is as fast as the reference Radeon HD 4850.
Overview
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.
Recommended CPU
Possible GPU Upgrades
GPU Variants
-
-

Title

Body