5
5
Select any two GPUs for comparison
VS

Gaming Performance Comparison

Recommended System Requirements
Game GeForce GTX 660 Zotac AMP Edition Radeon HD 7870 Sapphire GHz OC Edition
Cyberpunk 2077 183% 172%
Call of Duty: Modern Warfare 183% 172%
eFootball PES 2020 41% 35%
Total War: Three Kingdoms 191% 179%
Grand Theft Auto VI 215% 202%
Borderlands 3 118% 109%
Red Dead Redemption 2 183% 172%
F1 2019 135% 126%
Control 137% 128%
Doom Eternal 77% 70%

In terms of overall gaming performance, the graphical capabilities of the AMD Radeon HD 7870 Sapphire GHz OC Edition are marginally better than the Nvidia GeForce GTX 660 Zotac AMP Edition.

The HD 7870 has a 4 MHz higher core clock speed and the same number of Texture Mapping Units as the GTX 660. This results in the HD 7870 providing 0.3 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 4 MHz higher core clock speed and 8 more Render Output Units than the GTX 660. This results in the HD 7870 providing 8.5 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 GeForce GTX 660 Zotac AMP Edition and the Radeon HD 7870 Sapphire GHz OC Edition have the same amount of video memory, but are likely to provide slightly different experiences when displaying game textures at high resolutions.

The HD 7870 has 1.4 GB/sec greater memory bandwidth than the GTX 660, which means that the memory performance of the HD 7870 is marginally better than the GTX 660.

The GeForce GTX 660 Zotac AMP Edition has 960 Shader Processing Units and the Radeon HD 7870 Sapphire GHz OC Edition has 1280. However, the actual shader performance of the GTX 660 is 1067 and the actual shader performance of the HD 7870 is 1142. The HD 7870 having 75 better shader performance and an altogether better performance when taking into account other relevant data means that the HD 7870 delivers a marginally 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, but we do not have a recommended PSU wattage for the GTX 660.

Can I Run It

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GPU Architecture

Core Speed1046 MHzvs1050 MHz
Boost Clock1111 MHzvs-
ArchitectureKepler GK106-400-A1GCN 1.0 Pitcairn XT
OC Potential Poor vs Fair
Driver Support Good vs Good
Release Date01 Sep 2012vs25 Jun 2012
GPU LinkGD LinkGD Link
Approved
Comparison

Resolution Performance

1366x768 - green tick vs green tick -
1600x900
9.1
vs green tick
9.4
1920x1080
7.2
vs green tick
7.3
2560x1440
5.2
vs green tick
5.5
3840x2160
3.5
vs green tick
3.8

GPU Memory

Memory2048 MBvs2048 MB
Memory Speed1652 MHzvs1250 MHz
Memory Bus192 Bitvs256 Bit
Memory TypeGDDR5vsGDDR5
Memory Bandwidth158.6GB/secvs160GB/sec
L2 Cache 384 KB vs green tick 512 KB
Delta Color Compression no vs no
Memory Performance 0% green tick vs green tick 0%
Comparison

GPU Display

Shader Processing Units960vs1280
Actual Shader Performance51%vs55%
Technology28nmvs28nm
Texture Mapping Units80vs80
Texture Rate83.7 GTexel/svs84 GTexel/s
Render Output Units24vs32
Pixel Rate25.1 GPixel/svs33.6 GPixel/s
Comparison

GPU Outputs

Max Digital Resolution (WxH)4096x2160vs4096x2160
VGA Connections0vs0
DVI Connections2vs1
HDMI Connections1vs1
DisplayPort Connections-vs-
Comparison

GPU Power Requirements

Max Power--
Recommended PSU-500 Watts

GPU Features

DirectX12.0vs12.0
Shader Model5.0vs5.0
Open GL4.5vs4.4
Open CL-vs-
Notebook GPUnono
SLI/Crossfireyesvsyes
Dedicatedyesvsyes
Comparison

GPU Supporting Hardware

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

Gaming Performance Value

Performance Value

GPU Mini Review

Mini ReviewGeForce GTX 660 Zotac AMP Edition a special edition of GeForce GTX 660.
The new features include a new cooling system and in terms of overclocking, the base-clock was increased from 980MHz to 1046MHz and the boost clock can now reach 1111MHz, instead of 1033MHz. The memory clock was raised to 1652MHz.
Benchmarks indicate a 5.5% performance when compared to the reference card.
Radeon 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.
Recommended CPUIntel Core i3-4350T 3.1GHz
AMD Athlon II X4 638
AMD Athlon II X4 635
AMD Opteron 6134
AMD APU A6-3670K Quad-Core
Intel Core i7-4785T 4-Core 2.2GHz
Intel Xeon E5-2407 v2
Intel Core i5-4570 3.2GHz
Intel Core i5-4670S 3.1GHz
Intel Xeon Processor W3670
Possible GPU UpgradesGeForce 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
Radeon R9 390 Sapphire Nitro w/ Back Plate 8GB Edition
Radeon R9 390 Asus DirectCU III OC Strix Gaming 8GB Edition
Radeon R9 290X PowerColor PCS+ 4GB Edition
Radeon R9 290X Asus ROG Matrix Platinum Edition
Radeon R9 290X Asus DirectCU II OC Edition
GPU Variants--

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