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Gaming Performance Comparison

Recommended System Requirements
Game Radeon HD 7970 PowerColor LCS 3GB Edition Radeon HD 7850 XFX Ultra OC Edition
Cyberpunk 2077 53% 154%
Hitman 3 99% 231%
Assassins Creed: Valhalla 40% 133%
Call of Duty: Black Ops Cold War 35% 125%
FIFA 21 23% 28%
Grand Theft Auto VI 115% 258%
Far Cry 6 121% 268%
Genshin Impact 53% 154%
World of Warcraft: Shadowlands 119% 265%
Battlefield 6 99% 231%

In terms of overall gaming performance, the graphical capabilities of the AMD Radeon HD 7970 PowerColor LCS 3GB Edition are significantly better than the AMD Radeon HD 7850 XFX Ultra OC Edition.

The HD 7970 has a 75 MHz higher core clock speed and 64 more Texture Mapping Units than the HD 7850. This results in the HD 7970 providing 72 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 HD 7970 has a 75 MHz higher core clock speed than the HD 7850 and the same number of Render Output Units. This results in the HD 7970 providing 2.4 GPixel/s better pixeling performance. However, both GPUs support DirectX 9 or above, and pixeling performance is only really relevant when comparing older cards.

The HD 7850 was released less than a year after the HD 7970, and so they are likely to have similar driver support for optimizing performance when running the latest games.

The HD 7970 has 2048 MB more video memory than the HD 7850, so is likely to be much better at displaying game textures at higher resolutions. This is supported by the fact that the HD 7970 also has superior memory performance overall.

The HD 7970 has 120 GB/sec greater memory bandwidth than the HD 7850, which means that the memory performance of the HD 7970 is massively better than the HD 7850.

The Radeon HD 7970 PowerColor LCS 3GB Edition has 2048 Shader Processing Units and the Radeon HD 7850 XFX Ultra OC Edition has 1024. However, the actual shader performance of the HD 7970 is 1828 and the actual shader performance of the HD 7850 is 849. The HD 7970 having 979 better shader performance and an altogether better performance when taking into account other relevant data means that the HD 7970 delivers a massively smoother and more efficient experience when processing graphical data than the HD 7850.

The Radeon HD 7970 PowerColor LCS 3GB Edition requires 250 Watts to run but there is no entry for the Radeon HD 7850 XFX Ultra OC Edition. We would recommend a PSU with at least 650 Watts for the HD 7970 and a PSU with at least 500 Watts for the HD 7850. The HD 7970 has been recommended a PSU with 150 Watts more than the HD 7850. The difference is significant enough that the HD 7970 may have an adverse affect on your yearly electricity bills in comparison to the HD 7850.

Game FPS Benchmarks On Ultra

GPU Architecture

Core Speed1050 MHzvs975 MHz
Boost Clock-vs-
ArchitectureGCN 1.0 Tahiti XTGCN 1.0 Pitcairn PRO
OC Potential Poor vs Fair
Driver Support Good vs Good
Release Date01 Jan 2012vs01 Jun 2012
GPU LinkGD LinkGD Link
Approved
Comparison

Resolution Performance

1366x768 - green tick vs green tick -
1600x900
10
green tick vs
8.5
1920x1080
8.6
green tick vs
6.6
2560x1440
6.4
green tick vs
4.9
3840x2160
4.9
green tick vs
3.1

GPU Memory

Memory3072 MBvs1024 MB
Memory Speed1425 MHzvs1200 MHz
Memory Bus384 Bitvs256 Bit
Memory TypeGDDR5vsGDDR5
Memory Bandwidth273.6GB/secvs153.6GB/sec
L2 Cache 768 KB green tick vs 512 KB
Delta Color Compression no vs no
Memory Performance 0% green tick vs green tick 0%
Comparison

GPU Display

Shader Processing Units2048vs1024
Actual Shader Performance88%vs41%
Technology28nmvs28nm
Texture Mapping Units128vs64
Texture Rate134.4 GTexel/svs62.4 GTexel/s
Render Output Units32vs32
Pixel Rate33.6 GPixel/svs31.2 GPixel/s
Comparison

GPU Outputs

Max Digital Resolution (WxH)4096x2160vs4096x2160
VGA Connections0vs0
DVI Connections1vs2
HDMI Connections1vs1
DisplayPort Connections-vs-
Comparison

GPU Power Requirements

Max Power250 Watts-
Recommended PSU650 Watts & 42 Ampsvs500 Watts

GPU Features

DirectX12.0vs12.0
Shader Model5.0vs5.0
Open GL4.4vs4.4
Open CL-vs-
Notebook GPUnono
SLI/Crossfireyesvsyes
Dedicatedyesvsyes
Comparison

GPU Supporting Hardware

Recommended ProcessorIntel Core i5-2500K 3.3GHzvsIntel Core i5-3330 3.0GHz
Recommended RAM8 GBvs8 GB
Maximum Recommended Gaming Resolution1920x1080vs1920x1080

Gaming Performance Value

Performance Value

GPU Mini Review

Mini ReviewRadeon HD 7970 PowerColor LCS 3GB Edition is a special edition of the Radeon HD 7970 release by AMD. See its page for more information.
Changes include a boost in the core-clock from 925MHz to 1050MHz and in the memory clock from 5500GHz to 5700GHz. A tweaked cooling system and other changes were also made.
Benchmarks indicate a 7% performance boost when compared to the standard Radeon HD 7970.
Radeon HD 7850 XFX Ultra OC Edition is a special edition of the powerful Radeon HD 7850. See the standard version for more information about it.
The differences include an increase on the core-clock that went from 860MHz to 975MHz.
Benchmarks indicate a 7% boost when compared to the standard edition.
Recommended CPU
Possible GPU Upgrades
GPU Variants
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