Select any two GPUs for comparison
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Gaming Performance Comparison

Recommended System Requirements
Game Radeon R9 280X Gigabyte 3GB OC Edition Radeon HD 6870 PowerColor 1GB Edition
Red Dead Redemption 2 40% 189%
Call of Duty: Modern Warfare 40% 189%
Cyberpunk 2077 92% 297%
Borderlands 3 47% 205%
Need For Speed Heat 40% 189%
Fortnite: Chapter 2 36% 32%
Star Wars: Jedi - Fallen Order 92% 297%
The Outer Worlds 16% 141%
Microsoft Flight Simulator 92% 297%
FIFA 20 26% 54%

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 6870 PowerColor 1GB Edition.

The R9 280X has a 100 MHz higher core clock speed and 72 more Texture Mapping Units than the HD 6870. This results in the R9 280X providing 77.6 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 R9 280X has a 100 MHz higher core clock speed than the HD 6870 and the same number of Render Output Units. This results in the R9 280X providing 3.2 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 R9 280X was released over a year more recently than the HD 6870, and so the R9 280X is likely to have better driver support, meaning it will be more optimized for running the latest games when compared to the HD 6870.

The R9 280X has 2048 MB more video memory than the HD 6870, 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 153.6 GB/sec greater memory bandwidth than the HD 6870, which means that the memory performance of the R9 280X is massively better than the HD 6870.

The Radeon R9 280X Gigabyte 3GB OC Edition has 2048 Shader Processing Units and the Radeon HD 6870 PowerColor 1GB Edition has 1120. However, the actual shader performance of the R9 280X is 1915 and the actual shader performance of the HD 6870 is 504. The R9 280X having 1411 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 6870.

The R9 280X transistor size technology is 12 nm (nanometers) smaller than the HD 6870. This means that the R9 280X is expected to run slightly cooler and achieve higher clock frequencies than the HD 6870.

The Radeon R9 280X Gigabyte 3GB OC Edition requires 250 Watts to run but there is no entry for the Radeon HD 6870 PowerColor 1GB Edition. We would recommend a PSU with at least 600 Watts for the R9 280X and a PSU with at least 500 Watts for the HD 6870. The R9 280X has been recommended a PSU with 100 Watts more than the HD 6870. The difference is significant enough that the R9 280X may have an adverse affect on your yearly electricity bills in comparison to the HD 6870.

GPU Architecture

Core Speed1000 MHzvs900 MHz
Boost Clock1100 MHzvs-
ArchitectureGCN 1.0 Tahiti XTLTerascale 2 Barts XT
OC Potential Poor vs Fair
Driver Support Great vs Poor
Release Date09 Oct 2013vs01 Nov 2011
GPU LinkGD LinkGD Link
Approved
Comparison

Resolution Performance

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

GPU Memory

Memory3072 MBvs1024 MB
Memory Speed1500 MHzvs1050 MHz
Memory Bus384 Bitvs256 Bit
Memory TypeGDDR5vsGDDR5
Memory Bandwidth288GB/secvs134.4GB/sec
L2 Cache 768 KB green tick vs 512 KB
Delta Color Compression no vs no
Memory Performance 0% green tick vs green tick 0%
Comparison

GPU Display

Shader Processing Units2048vs1120
Actual Shader Performance92%vs24%
Technology28nmvs40nm
Texture Mapping Units128vs56
Texture Rate128 GTexel/svs50.4 GTexel/s
Render Output Units32vs32
Pixel Rate32 GPixel/svs28.8 GPixel/s
Comparison

GPU Outputs

Max Digital Resolution (WxH)4096x2160vs2560x1600
VGA Connections0vs0
DVI Connections1vs2
HDMI Connections1vs1
DisplayPort Connections-vs-
Comparison

GPU Power Requirements

Max Power250 Watts-
Recommended PSU600 Wattsvs500 Watts

GPU Features

DirectX12.0vs11.0
Shader Model5.0vs5.0
Open GL4.4vs4.3
Open CL-vs-
Notebook GPUnono
SLI/Crossfireyesvsyes
Dedicatedyesvsyes
Comparison

GPU Supporting Hardware

Recommended ProcessorIntel Core i5-3570K 3.4GHzvsIntel Core i5-760 2.8GHz
Recommended RAM8 GBvs8 GB
Maximum Recommended Gaming Resolution1920x1080vs1920x1080

Gaming Performance Value

Performance Value

GPU Mini Review

Mini ReviewRadeon 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.
Radeon HD 6870 PowerColor 1GB Edition is a special edition of the high-end Radeon HD 6870. See its page for more information about it.
It has no new features and so it can be addressed as a renamed Radeon HD 6870. Therefore its performance is exactly like the standard's.
Recommended CPU
Possible GPU Upgrades
-
GPU Variants
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