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Gaming Performance Comparison

Recommended System Requirements
Game Radeon HD 5850 XFX Black 1GB Edition GeForce GTX 660 DA OC 2GB Edition
Red Dead Redemption 2 197% 114%
Halo: Reach 6% 32%
Cyberpunk 2077 308% 194%
Call of Duty: Modern Warfare 197% 114%
Doom Eternal 155% 84%
Microsoft Flight Simulator 308% 194%
Warcraft 3: Reforged 89% 92%
Grand Theft Auto VI 354% 227%
Star Wars: Jedi - Fallen Order 308% 194%
Dragon Ball Z Kakarot 83% 32%

In terms of overall gaming performance, the graphical capabilities of the Nvidia GeForce GTX 660 DA OC 2GB Edition are significantly better than the AMD Radeon HD 5850 XFX Black 1GB Edition.

The GTX 660 has a 241 MHz higher core clock speed and 8 more Texture Mapping Units than the HD 5850. This results in the GTX 660 providing 25.4 GTexel/s better texturing performance. This still holds weight but shader performance is generally more relevant, particularly since both of these GPUs support at least DirectX 10.

The GTX 660 has a 241 MHz higher core clock speed than the HD 5850, but the HD 5850 has 8 more Render Output Units than the GTX 660. As a result, the HD 5850 exhibits a 0.4 GPixel/s better Pixel Fill Rate than the GTX 660. However, both GPUs support DirectX 9 or above, and pixeling performance is only really relevant when comparing older cards.

The GTX 660 was released over a year more recently than the HD 5850, and so the GTX 660 is likely to have better driver support, meaning it will be more optimized for running the latest games when compared to the HD 5850.

The GTX 660 has 1024 MB more video memory than the HD 5850, so is likely to be much better at displaying game textures at higher resolutions. This is supported by the fact that the GTX 660 also has superior memory performance overall.

The GTX 660 has 0.2 GB/sec greater memory bandwidth than the HD 5850, which means that the memory performance of the GTX 660 is marginally better than the HD 5850.

The Radeon HD 5850 XFX Black 1GB Edition has 1440 Shader Processing Units and the GeForce GTX 660 DA OC 2GB Edition has 960. However, the actual shader performance of the HD 5850 is 551 and the actual shader performance of the GTX 660 is 1016. The GTX 660 having 465 better shader performance and an altogether better performance when taking into account other relevant data means that the GTX 660 delivers a noticeably smoother and more efficient experience when processing graphical data than the HD 5850.

The GTX 660 transistor size technology is 12 nm (nanometers) smaller than the HD 5850. This means that the GTX 660 is expected to run slightly cooler and achieve higher clock frequencies than the HD 5850.

The Radeon HD 5850 XFX Black 1GB Edition requires 151 Watts to run and the GeForce GTX 660 DA OC 2GB Edition requires 140 Watts. We would recommend a PSU with at least 500 Watts for the HD 5850 and a PSU with at least 450 Watts for the GTX 660. The HD 5850 requires 11 Watts more than the GTX 660 to run. The difference is not significant enough for the HD 5850 to have a noticeably larger impact on your yearly electricity bills than the GTX 660.

Game FPS Benchmarks On Ultra

GPU Architecture

Core Speed765 MHzvs1006 MHz
Boost Clock-vs1058 MHz
ArchitectureTerascale 2 Cypress PROKepler GK106-400-A1
OC Potential Poor vs Fair
Driver Support Poor vs Good
Release Date13 Apr 2010vs01 Sep 2012
GPU LinkGD LinkGD Link

Resolution Performance

1366x768 - green tick vs green tick -
vs green tick
vs green tick
vs green tick
3840x2160 - vs green tick

GPU Memory

Memory1024 MBvs2048 MB
Memory Speed1125 MHzvs1502 MHz
Memory Bus256 Bitvs192 Bit
Memory TypeGDDR5vsGDDR5
Memory Bandwidth144GB/secvs144.2GB/sec
L2 Cache 512 KB green tick vs 384 KB
Delta Color Compression no vs no
Memory Performance 0% green tick vs green tick 0%

GPU Display

Shader Processing Units1440vs960
Actual Shader Performance27%vs49%
Texture Mapping Units72vs80
Texture Rate55.1 GTexel/svs80.5 GTexel/s
Render Output Units32vs24
Pixel Rate24.5 GPixel/svs24.1 GPixel/s

GPU Outputs

Max Digital Resolution (WxH)2560x1600vs4096x2160
VGA Connections0vs0
DVI Connections2vs2
HDMI Connections1vs1
DisplayPort Connections-vs-

GPU Power Requirements

Max Power151 Wattsvs140 Watts
Recommended PSU500 Watts & 40 Ampsvs450 Watts & 24 Amps

GPU Features

Shader Model5.0vs5.0
Open GL4.3vs4.5
Open CL-vs-
Notebook GPUnono

GPU Supporting Hardware

Recommended ProcessorIntel Core i7-860 Quad 2.80GHzvsIntel Core i5-3470 3.2GHz
Recommended RAM8 GBvs8 GB
Maximum Recommended Gaming Resolution1920x1080vs1920x1080

Gaming Performance Value

Performance Value

GPU Mini Review

Mini ReviewOverview
Radeon HD 5850 XFX Black 1GB Edition is a special edition of AMD's High-End Radeon HD 5850 1GB, created by XFX.

Overclock Out of The Box
The Central Unit now runs at 765MHz, instead of 725MHz while the Memory Clock is now of 1125MHz.

Cooling Solution
The Cooling System has been replaced by XFX's custom-designed Thermal Design, meaning the Graphics Card runs cooler under load.

Benchmarks indicate a 6% performance over the reference Radeon HD 5850 1GB.
GeForce GTX 660 DA OC 2GB Edition a special edition of GeForce GTX 660. Check the page of the reference card to know more about its core.
The new features include overclocking in the central unit which was raised from 980MHz to 1006MHz whereas the boost clock can now reach 1058MHz, instead of 1033MHz. The memory clock was left untouched.
The overclocking is not very significant and so expect at most a performance boost of around 2% when compared to the standard GeForce GTX 660.
Recommended CPU
Possible GPU Upgrades
GPU Variants