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Gaming Performance Comparison

Recommended System Requirements
Game Radeon HD 7870 Sapphire GHz OC Edition CrossFire GeForce GTX 660 MSI OC 2GB Edition
Cyberpunk 2077 76% 186%
Call of Duty: Modern Warfare 76% 186%
eFootball PES 2020 13% 42%
Total War: Three Kingdoms 80% 193%
Grand Theft Auto VI 95% 218%
Borderlands 3 35% 120%
Red Dead Redemption 2 76% 186%
F1 2019 46% 137%
Control 47% 139%
Doom Eternal 10% 79%

In terms of overall gaming performance, the graphical capabilities of the AMD Radeon HD 7870 Sapphire GHz OC Edition CrossFire are significantly better than the Nvidia GeForce GTX 660 MSI OC 2GB Edition.

The HD 7870 has a 44 MHz higher core clock speed and 80 more Texture Mapping Units than the GTX 660. This results in the HD 7870 providing 87.5 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 7870 has a 44 MHz higher core clock speed and 40 more Render Output Units than the GTX 660. This results in the HD 7870 providing 43.1 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 GTX 660 was released less than a year after the HD 7870, and so they are likely to have similar driver support for optimizing performance when running the latest games.

Both GPUs exhibit very powerful performance, so it probably isn't worth upgrading from one to the other, as both are capable of running even the most demanding games at the highest settings.

The HD 7870 has 2048 MB more video memory than the GTX 660, so is likely to be much better at displaying game textures at higher resolutions. This is supported by the fact that the HD 7870 also has superior memory performance overall.

The HD 7870 has 175.8 GB/sec greater memory bandwidth than the GTX 660, which means that the memory performance of the HD 7870 is massively better than the GTX 660.

The Radeon HD 7870 Sapphire GHz OC Edition CrossFire has 2560 Shader Processing Units and the GeForce GTX 660 MSI OC 2GB Edition has 960. However, the actual shader performance of the HD 7870 is 2285 and the actual shader performance of the GTX 660 is 1029. The HD 7870 having 1256 better shader performance and an altogether better performance when taking into account other relevant data means that the HD 7870 delivers a massively smoother and more efficient experience when processing graphical data than the GTX 660.

We would recommend a PSU with at least 500 Watts for the HD 7870.

Can I Run It

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GPU Architecture

Core Speed1050 MHzvs1006 MHz
Boost Clock-vs1072 MHz
ArchitectureGCN 1.0 Pitcairn XT (x2)Kepler GK106-400-A1
OC Potential Fair vs Fair
Driver Support Good vs Good
Release Date25 Jun 2012vs01 Oct 2012
GPU LinkGD LinkGD Link

Resolution Performance

1366x768 - green tick vs green tick -
1600x900 - vs green tick
green tick vs
2560x1440 - vs green tick
3840x2160 - vs green tick

GPU Memory

Memory4096 MBvs2048 MB
Memory Speed1250 MHzvs1502 MHz
Memory Bus512 Bitvs192 Bit
Memory TypeGDDR5vsGDDR5
Memory Bandwidth320GB/secvs144.2GB/sec
L2 Cache 1024 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 Units2560vs960
Actual Shader Performance100%vs50%
Texture Mapping Units160vs80
Texture Rate168 GTexel/svs80.5 GTexel/s
Render Output Units64vs24
Pixel Rate67.2 GPixel/svs24.1 GPixel/s

GPU Outputs

Max Digital Resolution (WxH)4096x2160vs4096x2160
VGA Connections0vs0
DVI Connections1vs2
HDMI Connections1vs1
DisplayPort Connections0vs-

GPU Power Requirements

Max Power--
Recommended PSU500 Watts-

GPU Features

Shader Model5.0vs5.0
Open GL4.4vs4.5
Open CL-vs-
Notebook GPUnono

GPU Supporting Hardware

Recommended ProcessorIntel Core i5-3570K 3.4GHzvsIntel Core i5-3470 3.2GHz
Recommended RAM8 GBvs8 GB
Maximum Recommended Gaming Resolution1920x1080vs1920x1080

Gaming Performance Value

Performance Value

GPU Mini Review

Mini ReviewRadeon HD 7870 Sapphire GHz OC Edition is a special edition of the powerful Radeon HD 7870. See the standard version for more information about it.
The differences include an increase in the core-clock that went from 1000MHz to 1050MHz and in the memory clock raised from 1200MHz to 1250MHz and a new quiet and efficient cooling system is also available.
Benchmarks indicate a 4,0% performance boost when compared to the standard Radeon HD 7870.
All games, including demanding one's, will run on the highest settings.
GeForce GTX 660 MSI OC 2GB Edition is a special edition of GeForce GTX 660.
The new features include the Propeller Blade Technology solution which generates 20% more airflow than traditional fan design, according to MSI.
In terms of overclocking, the base-clock was increased from 980MHz to 1006MHz and the boost clock can now reach 1072MHz, instead of 1033MHz. The memory clock was left untouched.
The overclocking is therefore somewhat significant and the performance boost is around 5% when compared to the standard GeForce GTX 660.
Recommended CPUIntel Core i5-4460S 2.9GHz
AMD Opteron 6180 SE
Intel Xeon Processor X5660
Intel Core i5-4670T 2.3GHz
Intel Core i5-4430 3.0GHz
Intel Core i5-4460 3.2GHz
Intel Core i5-4570S 2.9GHz
Intel Xeon E3-1220 v2
Intel Xeon Processor X5675
Intel Core i5-7400 3.0GHz
Possible GPU Upgrades-GeForce GTX 660 Twin Frozr OC Edition SLI
GeForce GTX 780
Radeon HD 7970 GHz MSI Lightning BE 3GB Edition
Quadro M4000
GeForce GTX 950 2GB SLI
GPU Variants--



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