Select any two GPUs for comparison
VS

Gaming Performance Comparison

Recommended System Requirements
Game Radeon R9 270X Crossfire Radeon HD 7870 PCS+ Vortex II Edition
Cyberpunk 2077 21% 103%
Assassins Creed: Valhalla 11% 86%
Call of Duty: Black Ops Cold War 7% 80%
FIFA 21 39% 2%
Microsoft Flight Simulator 7% 80%
World of Warcraft: Shadowlands 74% 191%
Watch Dogs Legion 17% 96%
Horizon: Zero Dawn 15% 92%
Grand Theft Auto VI 71% 186%
Genshin Impact 21% 103%

In terms of overall gaming performance, the graphical capabilities of the AMD Radeon R9 270X Crossfire are significantly better than the AMD Radeon HD 7870 PCS+ Vortex II Edition.

The HD 7870 has a 150 MHz higher core clock speed than the R9 270X, but the R9 270X has 80 more Texture Mapping Units than the HD 7870. As a result, the R9 270X exhibits a 68 GTexel/s better Texture Fill Rate than the HD 7870. 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 has a 150 MHz higher core clock speed than the R9 270X, but the R9 270X has 32 more Render Output Units than the HD 7870. As a result, the R9 270X exhibits a 27.2 GPixel/s better Pixel Fill Rate than the HD 7870. However, both GPUs support DirectX 9 or above, and pixeling performance is only really relevant when comparing older cards.

The R9 270X was released over a year more recently than the HD 7870, and so the R9 270X is likely to have better driver support, meaning it will be more optimized for running the latest games when compared to the HD 7870.

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 R9 270X has 2048 MB more video memory than the HD 7870, so is likely to be much better at displaying game textures at higher resolutions. This is supported by the fact that the R9 270X also has superior memory performance overall.

The R9 270X has 198.4 GB/sec greater memory bandwidth than the HD 7870, which means that the memory performance of the R9 270X is massively better than the HD 7870.

The Radeon R9 270X Crossfire has 2560 Shader Processing Units and the Radeon HD 7870 PCS+ Vortex II Edition has 1280. However, the actual shader performance of the R9 270X is 2285 and the actual shader performance of the HD 7870 is 1251. The R9 270X having 1034 better shader performance and an altogether better performance when taking into account other relevant data means that the R9 270X delivers a massively smoother and more efficient experience when processing graphical data than the HD 7870.

The Radeon R9 270X Crossfire requires 360 Watts to run but there is no entry for the Radeon HD 7870 PCS+ Vortex II Edition. We would recommend a PSU with at least 750 Watts for the R9 270X and a PSU with at least 500 Watts for the HD 7870. The R9 270X has been recommended a PSU with 250 Watts more than the HD 7870. The difference is significant enough that the R9 270X may have an adverse affect on your yearly electricity bills in comparison to the HD 7870.

Game FPS Benchmarks On Ultra

GPU Architecture

Core Speed1000 MHzvs1150 MHz
Boost Clock1050 MHzvs-
ArchitectureGCN 1.1 Curacao XT (x2)GCN 1.0 Pitcairn XT
OC Potential Poor vs Poor
Driver Support Great vs Good
Release Date08 Oct 2013vs01 Sep 2012
GPU LinkGD LinkGD Link
Approved
Comparison

Resolution Performance

1366x768 - green tick vs green tick -
1600x900 - vs green tick
9.5
1920x1080
9.6
green tick vs
7.5
2560x1440 - vs green tick
5.5
3840x2160 - vs green tick
3.9

GPU Memory

Memory4096 MBvs2048 MB
Memory Speed1400 MHzvs1250 MHz
Memory Bus512 Bitvs256 Bit
Memory TypeGDDR5vsGDDR5
Memory Bandwidth358.4GB/secvs160GB/sec
L2 Cache 1024 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 Units2560vs1280
Actual Shader Performance100%vs60%
Technology28nmvs28nm
Texture Mapping Units160vs80
Texture Rate160 GTexel/svs92 GTexel/s
Render Output Units64vs32
Pixel Rate64 GPixel/svs36.8 GPixel/s
Comparison

GPU Outputs

Max Digital Resolution (WxH)4096x2160vs4096x2160
VGA Connections0vs0
DVI Connections2vs2
HDMI Connections1vs1
DisplayPort Connections-vs-
Comparison

GPU Power Requirements

Max Power360 Watts-
Recommended PSU750 Wattsvs500 Watts

GPU Features

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

GPU Supporting Hardware

Recommended ProcessorIntel Core i5-4670K 3.4GHzvsIntel Core i5-3570K 3.4GHz
Recommended RAM8 GBvs8 GB
Maximum Recommended Gaming Resolution1920x1080vs1920x1080

Gaming Performance Value

Performance Value

GPU Mini Review

Mini ReviewRadeon R9 270X Crossfire is a solution of two Radeon R9 270X put together using AMD'S Crossfire technology.
Check the page of Radeon R9 270X 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 up to x% better than a single Radeon R9 270X performing by itself but at times (depending whether or not the 3D game supports crossfire or in the graphics driver) it performed worse than a single Radeon R9 270X. Expect this combination to draw up to 360 Watt though the average power consumption should be slightly lower.
Even the most demanding games will run at the highest settings.
Radeon HD 7870 PCS+ Vortex II Edition is a special edition of Radeon HD 7870.
This is one of today's most powerful editions of the reference as it features increases in both the core and memory clocks that went from 1000MHz to 1150MHz and from 1200MHz to 1250MHz.
Benchmarks indicate the performance boost is quite extreme and around 8% when compared to the reference Radeon HD 7870.
Recommended CPU
Possible GPU Upgrades
-
GPU Variants
-
-