Select any two GPUs for comparison

Gaming Performance Comparison

Recommended System Requirements
Game Radeon R5 7400K GeForce GTX 660 Zotac AMP Edition
Red Dead Redemption 2 771% 106%
Cyberpunk 2077 1096% 183%
Doom Eternal 649% 77%
Call of Duty: Modern Warfare 771% 106%
Dragon Ball Z Kakarot 437% 27%
Halo: Reach 177% 35%
Microsoft Flight Simulator 1096% 183%
Star Wars: Jedi - Fallen Order 1096% 183%
Grand Theft Auto VI 1230% 215%
Need For Speed Heat 771% 106%

In terms of overall gaming performance, the graphical capabilities of the Nvidia GeForce GTX 660 Zotac AMP Edition are massively better than the AMD Radeon R5 7400K.

The GTX 660 has a 290 MHz higher core clock speed and 64 more Texture Mapping Units than the Radeon R5 7400K. This results in the GTX 660 providing 71.6 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 290 MHz higher core clock speed and 16 more Render Output Units than the Radeon R5 7400K. This results in the GTX 660 providing 19.1 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 Radeon R5 7400K was released over a year more recently than the GTX 660, and so the Radeon R5 7400K is likely to have better driver support, meaning it will be more optimized for running the latest games when compared to the GTX 660.

The GTX 660 has 2048 MB video memory, but the Radeon R5 7400K does not have an entry, so the two GPUs cannot be reliably compared in this area.

The Radeon R5 7400K has 256 Shader Processing Units and the GeForce GTX 660 Zotac AMP Edition has 960. However, the actual shader performance of the Radeon R5 7400K is 126 and the actual shader performance of the GTX 660 is 1067. The GTX 660 having 941 better shader performance and an altogether better performance when taking into account other relevant data means that the GTX 660 delivers a massively smoother and more efficient experience when processing graphical data than the Radeon R5 7400K.

The Radeon R5 7400K requires 65 Watts to run but there is no entry for the GeForce GTX 660 Zotac AMP Edition. We would recommend a PSU with at least 300 Watts for the Radeon R5 7400K.

Game FPS Benchmarks On Ultra

GPU Architecture

Core Speed756 MHzvs1046 MHz
Boost Clock-vs1111 MHz
ArchitectureKaveriKepler GK106-400-A1
OC Potential None vs Poor
Driver Support - vs Good
Release Date30 Jun 2014vs01 Sep 2012
GPU LinkGD LinkGD Link

Resolution Performance

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

GPU Memory

MemoryN/Avs2048 MB
Memory Speed933 MHzvs1652 MHz
Memory Bus128 Bitvs192 Bit
Memory TypeDDR3vsGDDR5
Memory Bandwidth29.9GB/secvs158.6GB/sec
L2 Cache - vs green tick 384 KB
Delta Color Compression no vs no
Memory Performance 0% green tick vs green tick 0%

GPU Display

Shader Processing Units256vs960
Actual Shader Performance6%vs51%
Texture Mapping Units16vs80
Texture Rate12.1 GTexel/svs83.7 GTexel/s
Render Output Units8vs24
Pixel Rate6 GPixel/svs25.1 GPixel/s

GPU Outputs

Max Digital Resolution (WxH)4096x2160vs4096x2160
VGA Connections0vs0
DVI Connections0vs2
HDMI Connections0vs1
DisplayPort Connections-vs-

GPU Power Requirements

Max Power65 Watts-
Recommended PSU300 Watts & 18 Amps-

GPU Features

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

GPU Supporting Hardware

Recommended Processor-Intel Core i5-3470 3.2GHz
Recommended RAM4 GBvs8 GB
Maximum Recommended Gaming Resolution1366x768vs1920x1080

Gaming Performance Value

Performance Value

GPU Mini Review

Mini ReviewRadeon R5 7400K is an integrated Graphics Card in the A4-7400K.
It is based on the Graphics Core Next Architecture and offers 256 Shader Processing Units, XX TMUs and X ROPs. The memory bus-width will depend on whether or not the system's RAM is dual-channeled and the operating memory clock, on its frequency. Thus, it can be either 64-bit or 128-bit and up to 933MHz.
Therefore, the Graphics Card's performance depends a lot on the system configuration. Best case scenario, expect performance superior to Intel's powerful Iris Graphics 5100.
The card is thus suited for 720p gaming and some modern demanding games can be played at least on medium settings.
GeForce 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.
Recommended CPU
Possible GPU Upgrades
GPU Variants