Select any two GPUs for comparison
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Gaming Performance Comparison

Recommended System Requirements
Game Radeon HD 7870 XT Crossfire GeForce GTX 660 Ti 3-way SLI
Hitman 3 64% 20%
Cyberpunk 2077 26% 7%
Assassins Creed: Valhalla 15% 15%
FIFA 21 36% 53%
Grand Theft Auto VI 78% 30%
Call of Duty: Black Ops Cold War 12% 18%
Resident Evil 8 26% 7%
Genshin Impact 26% 7%
Far Cry 6 83% 34%
The Medium 58% 16%

In terms of overall gaming performance, the graphical capabilities of the Nvidia GeForce GTX 660 Ti 3-way SLI are significantly better than the AMD Radeon HD 7870 XT Crossfire.

The HD 7870 XT has a 10 MHz higher core clock speed than the GTX 660 Ti, but the GTX 660 Ti has 144 more Texture Mapping Units than the HD 7870 XT. As a result, the GTX 660 Ti exhibits a 129.8 GTexel/s better Texture Fill Rate than the HD 7870 XT. 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 XT has a 10 MHz higher core clock speed than the GTX 660 Ti, but the GTX 660 Ti has 8 more Render Output Units than the HD 7870 XT. As a result, the GTX 660 Ti exhibits a 6.7 GPixel/s better Pixel Fill Rate than the HD 7870 XT. However, both GPUs support DirectX 9 or above, and pixeling performance is only really relevant when comparing older cards.

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

The GTX 660 Ti has 48.6 GB/sec greater memory bandwidth than the HD 7870 XT, which means that the memory performance of the GTX 660 Ti is noticeably better than the HD 7870 XT.

The Radeon HD 7870 XT Crossfire has 3072 Shader Processing Units and the GeForce GTX 660 Ti 3-way SLI has 4032. However, the actual shader performance of the HD 7870 XT is 2415 and the actual shader performance of the GTX 660 Ti is 3951. The GTX 660 Ti having 1536 better shader performance and an altogether better performance when taking into account other relevant data means that the GTX 660 Ti delivers a massively smoother and more efficient experience when processing graphical data than the HD 7870 XT.

The Radeon HD 7870 XT Crossfire requires 350 Watts to run and the GeForce GTX 660 Ti 3-way SLI requires 450 Watts. We would recommend a PSU with at least 750 Watts for the HD 7870 XT. The GTX 660 Ti requires 100 Watts more than the HD 7870 XT to run. The difference is significant enough that the GTX 660 Ti may have an adverse affect on your yearly electricity bills in comparison to the HD 7870 XT.

Game FPS Benchmarks On Ultra

GPU Architecture

Core Speed925 MHzvs915 MHz
Boost Clock-vs980 MHz
ArchitectureGCN 1.0 Tahiti LE (x2)Kepler GK104-200-KD-A2 (x3)
OC Potential Fair vs Good
Driver Support Good vs Good
Release Date01 Nov 2012vs01 Aug 2012
GPU LinkGD LinkGD Link
Approved
Comparison

Resolution Performance

1366x768 - green tick vs green tick -
1600x900 - green tick vs green tick -
1920x1080
9.4
vs green tick
10
2560x1440 - green tick vs green tick -
3840x2160 - green tick vs green tick -

GPU Memory

Memory4096 MBvs6144 MB
Memory Speed1500 MHzvs1502 MHz
Memory Bus512 Bitvs576 Bit
Memory TypeGDDR5vsGDDR5
Memory Bandwidth384GB/secvs432.6GB/sec
L2 Cache 1024 KB vs green tick 1152 KB
Delta Color Compression no vs no
Memory Performance 0% green tick vs green tick 0%
Comparison

GPU Display

Shader Processing Units3072vs4032
Actual Shader Performance100%vs100%
Technology28nmvs28nm
Texture Mapping Units192vs336
Texture Rate177.6 GTexel/svs307.4 GTexel/s
Render Output Units64vs72
Pixel Rate59.2 GPixel/svs65.9 GPixel/s
Comparison

GPU Outputs

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

GPU Power Requirements

Max Power350 Wattsvs450 Watts
Recommended PSU750 Watts-

GPU Features

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

GPU Supporting Hardware

Recommended ProcessorIntel Core i5-3570K 3.4GHzvsIntel Core i5-3570K 3.4GHz
Recommended RAM12 GBvs8 GB
Maximum Recommended Gaming Resolution1920x1080vs1920x1080

Gaming Performance Value

Performance Value

GPU Mini Review

Mini ReviewRadeon HD 7870 XT Crossfire is a solution of two Radeon HD 7870 XT put together using AMD'S Crossfire technology.
Check the page of Radeon HD 7870 XT to know more about its chip.
Crossfire relies a lot on proper driver support and may suffer from micro-stuttering in lower frame rates (below 30). Benchmarks indicate the performance is overall, is close to Radeon HD 7950 Crossfire but it might be worse (depending on whether or not the 3D game supports crossfire or in the graphics driver) than a single Radeon HD 7870 XT. Expect this combination to draw up to 370 Watt though the average power consumption should be slightly lower.
Even the most demanding games will run at the highest settings.
GeForce GTX 660 Ti 3-way SLI is a solution of three GeForce GTX 660 Ti put together using NVIDIA'S SLI technology.
Check the page of GeForce GTX 660 Ti to know more about its chip.
As usual, SLI relies a lot on proper driver support and may suffer from micro-stuttering in lower frame rates (below 30). Benchmarks indicate the performance is overall, is up to X% better than a single GeForce GTX 660 Ti performing by itself but at times (depending whether or not the 3D game supports SLI or in the graphics driver) it performed worse than a single GeForce GTX 660 Ti. Expect this combination to draw up to 450 Watt though the average power consumption should be slightly lower.
Even the most demanding games will run at the highest settings.
Recommended CPU
Possible GPU Upgrades
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GPU Variants
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