Select any two GPUs for comparison
VS

Gaming Performance Comparison

Recommended System Requirements
Game Radeon HD 7790 DirectCU II OC 2GB Edition GeForce GTX 660 Zotac Synergy Edition
Battlefield 2042 318% 210%
Grand Theft Auto VI 333% 221%
Resident Evil 8 300% 197%
Far Cry 6 345% 230%
New World 172% 102%
The Ascent 437% 299%
Back 4 Blood 300% 197%
Forza Horizon 5 142% 80%
Star Citizen 170% 100%
FIFA 22 55% 15%

In terms of overall gaming performance, the graphical capabilities of the Nvidia GeForce GTX 660 Zotac Synergy Edition are significantly better than the AMD Radeon HD 7790 DirectCU II OC 2GB Edition.

The HD 7790 has a 82 MHz higher core clock speed than the GTX 660, but the GTX 660 has 24 more Texture Mapping Units than the HD 7790. As a result, the GTX 660 exhibits a 19.2 GTexel/s better Texture Fill Rate than the HD 7790. This still holds weight but shader performance is generally more relevant, particularly since both of these GPUs support at least DirectX 10.

The HD 7790 has a 82 MHz higher core clock speed than the GTX 660, but the GTX 660 has 8 more Render Output Units than the HD 7790. As a result, the GTX 660 exhibits a 6.6 GPixel/s better Pixel Fill Rate than the HD 7790. However, both GPUs support DirectX 9 or above, and pixeling performance is only really relevant when comparing older cards.

The HD 7790 was released less than a year after the GTX 660, and so they are likely to have similar driver support for optimizing performance when running the latest games.

The Radeon HD 7790 DirectCU II OC 2GB Edition and the GeForce GTX 660 Zotac Synergy Edition have the same amount of video memory, but are likely to provide slightly different experiences when displaying game textures at high resolutions.

The GTX 660 has 41.8 GB/sec greater memory bandwidth than the HD 7790, which means that the memory performance of the GTX 660 is noticeably better than the HD 7790.

The Radeon HD 7790 DirectCU II OC 2GB Edition has 896 Shader Processing Units and the GeForce GTX 660 Zotac Synergy Edition has 960. However, the actual shader performance of the HD 7790 is 963 and the actual shader performance of the GTX 660 is 1017. The GTX 660 having 54 better shader performance and an altogether better performance when taking into account other relevant data means that the GTX 660 delivers a significantly smoother and more efficient experience when processing graphical data than the HD 7790.

The GeForce GTX 660 Zotac Synergy Edition requires 140 Watts to run but there is no entry for the HD 7790.

Game FPS Benchmarks On Ultra

GPU Architecture

Core Speed1075 MHzvs993 MHz
Boost Clock-vs1059 MHz
ArchitectureGCN 1.0 Bonaire XTKepler GK106-400-A1
OC Potential Poor vs Good
Driver Support - vs Good
Release Date22 Mar 2013vs01 Sep 2012
GPU LinkGD LinkGD Link
Approved
Comparison

Resolution Performance

1366x768 - green tick vs green tick -
1600x900
7.9
vs green tick
8.9
1920x1080
6
vs green tick
7
2560x1440
4.3
vs green tick
5.1
3840x2160
2.6
vs green tick
3.4

GPU Memory

Memory2048 MBvs2048 MB
Memory Speed1600 MHzvs1502 MHz
Memory Bus128 Bitvs192 Bit
Memory TypeGDDR5vsGDDR5
Memory Bandwidth102.4GB/secvs144.2GB/sec
L2 Cache 512 KB green tick vs 384 KB
Delta Color Compression no vs no
Memory Performance 0% green tick vs green tick 0%
Comparison

GPU Display

Shader Processing Units896vs960
Actual Shader Performance46%vs49%
Technology28nmvs28nm
Texture Mapping Units56vs80
Texture Rate60.2 GTexel/svs79.4 GTexel/s
Render Output Units16vs24
Pixel Rate17.2 GPixel/svs23.8 GPixel/s
Comparison

GPU Outputs

Max Digital Resolution (WxH)2560x1600vs4096x2160
VGA Connections0vs0
DVI Connections2vs2
HDMI Connections1vs1
DisplayPort Connections-vs-
Comparison

GPU Power Requirements

Max Power-140 Watts
Recommended PSU--

GPU Features

DirectX11.1vs12.0
Shader Model5.0vs5.0
Open GL4.2vs4.5
Open CL-vs-
Notebook GPUnono
SLI/Crossfireyesvsyes
Dedicatedyesvsyes
Comparison

GPU Supporting Hardware

Recommended ProcessorIntel Core i3-3250 3.5GHzvsIntel Core i5-3470 3.2GHz
Recommended RAM8 GBvs8 GB
Maximum Recommended Gaming Resolution1600x900vs1920x1080

Gaming Performance Value

Performance Value

GPU Mini Review

Mini ReviewRadeon HD 7790 DirectCU II OC 2GB Edition is a special edition of the performance Radeon HD 7790.
This edition comes with a cooling solution called DirectCU II, which achieves 20% lower temps and vastly quieter performance than reference with direct-contact copper heatpipes and dual fans, according to Asus. It also comes overclocked out of the box in the core-clock to 1075MHz and on the memory clock to 1600MHz, though the latter might prove useless, as this card might not benefit from extra bandwidth.
The 2GB framer buffer proves useless and Benchmarks indicate a 5% performance boost when compared to the reference card.
GeForce GTX 660 Zotac Synergy Edition is 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 993MHz and the boost clock can now reach 1059MHz, instead of 1033MHz. The memory clock was left untouched.
The overclocking is only slightly and the performance boost is around 1% when compared to the reference GeForce GTX 660.
Recommended CPU
Possible GPU Upgrades
GPU Variants
-
-