Select any two GPUs for comparison
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Gaming Performance Comparison

Recommended System Requirements
Game Radeon HD 7790 DirectCU II OC 2GB Edition Radeon R9 280X Gigabyte 3GB OC Edition
Red Dead Redemption 2 191% 40%
Call of Duty: Modern Warfare 191% 40%
Cyberpunk 2077 300% 92%
Fortnite: Chapter 2 33% 36%
FIFA 20 55% 26%
The Outer Worlds 142% 16%
Borderlands 3 207% 47%
Need For Speed Heat 191% 40%
Star Wars: Jedi - Fallen Order 300% 92%
Zombieland: Double Tap - Road Trip 172% 30%

In terms of overall gaming performance, the graphical capabilities of the AMD Radeon R9 280X Gigabyte 3GB OC Edition are massively better than the AMD Radeon HD 7790 DirectCU II OC 2GB Edition.

The HD 7790 has a 75 MHz higher core clock speed than the R9 280X, but the R9 280X has 72 more Texture Mapping Units than the HD 7790. As a result, the R9 280X exhibits a 67.8 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 75 MHz higher core clock speed than the R9 280X, but the R9 280X has 16 more Render Output Units than the HD 7790. As a result, the R9 280X exhibits a 14.8 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 R9 280X was released less than a year after the HD 7790, and so they are likely to have similar driver support for optimizing performance when running the latest games.

The R9 280X has 1024 MB more video memory than the HD 7790, so is likely to be much better at displaying game textures at higher resolutions. This is supported by the fact that the R9 280X also has superior memory performance overall.

The R9 280X has 185.6 GB/sec greater memory bandwidth than the HD 7790, which means that the memory performance of the R9 280X is massively better than the HD 7790.

The Radeon HD 7790 DirectCU II OC 2GB Edition has 896 Shader Processing Units and the Radeon R9 280X Gigabyte 3GB OC Edition has 2048. However, the actual shader performance of the HD 7790 is 963 and the actual shader performance of the R9 280X is 1915. The R9 280X having 952 better shader performance and an altogether better performance when taking into account other relevant data means that the R9 280X delivers a massively smoother and more efficient experience when processing graphical data than the HD 7790.

The Radeon R9 280X Gigabyte 3GB OC Edition requires 250 Watts to run but there is no entry for the HD 7790. We would recommend a PSU with at least 600 Watts for the R9 280X, but we do not have a recommended PSU wattage for the HD 7790.

GPU Architecture

Core Speed1075 MHzvs1000 MHz
Boost Clock-vs1100 MHz
ArchitectureGCN 1.0 Bonaire XTGCN 1.0 Tahiti XTL
OC Potential Poor vs Poor
Driver Support - vs Great
Release Date22 Mar 2013vs09 Oct 2013
GPU LinkGD LinkGD Link
Approved
Comparison

Resolution Performance

1366x768 - green tick vs green tick -
1600x900
7.9
vs green tick
10
1920x1080
6
vs green tick
8.7
2560x1440
4.3
vs green tick
6.5
3840x2160
2.6
vs green tick
5

GPU Memory

Memory2048 MBvs3072 MB
Memory Speed1600 MHzvs1500 MHz
Memory Bus128 Bitvs384 Bit
Memory TypeGDDR5vsGDDR5
Memory Bandwidth102.4GB/secvs288GB/sec
L2 Cache 512 KB vs green tick 768 KB
Delta Color Compression no vs no
Memory Performance 0% green tick vs green tick 0%
Comparison

GPU Display

Shader Processing Units896vs2048
Actual Shader Performance46%vs92%
Technology28nmvs28nm
Texture Mapping Units56vs128
Texture Rate60.2 GTexel/svs128 GTexel/s
Render Output Units16vs32
Pixel Rate17.2 GPixel/svs32 GPixel/s
Comparison

GPU Outputs

Max Digital Resolution (WxH)2560x1600vs4096x2160
VGA Connections0vs0
DVI Connections2vs1
HDMI Connections1vs1
DisplayPort Connections-vs-
Comparison

GPU Power Requirements

Max Power-250 Watts
Recommended PSU-600 Watts

GPU Features

DirectX11.1vs12.0
Shader Model5.0vs5.0
Open GL4.2vs4.4
Open CL-vs-
Notebook GPUnono
SLI/Crossfireyesvsyes
Dedicatedyesvsyes
Comparison

GPU Supporting Hardware

Recommended ProcessorIntel Core i3-3250 3.5GHzvsIntel Core i5-3570K 3.4GHz
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.
Radeon R9 280X Gigabyte 3GB OC Edition is a special edition of the high-end Radeon R9 280X.
This edition comes with a custom cooling system called "WindForce", which reduces the card's temperature under load, significantly and comes overclocked out of the box in the central unit that was increased from 850MHz to 1000MHz, while the Boost clock is now of 1100MHz.
Benchmarks indicate a 5% performance boost over the standard edition and so this card offers the same performance a GeForce GTX 770 does.
Recommended CPU
Possible GPU Upgrades
-
GPU Variants
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