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Gaming Performance Comparison

Recommended System Requirements
Game Radeon HD 8870 (OEM) Radeon HD 6870 IceQ X Edition
Cyberpunk 2077 183% 297%
Halo: Reach 35% 8%
Red Dead Redemption 2 106% 189%
Call of Duty: Modern Warfare 106% 189%
Doom Eternal 77% 149%
Dragon Ball Z Kakarot 27% 78%
Microsoft Flight Simulator 183% 297%
FIFA 20 10% 54%
Need For Speed Heat 106% 189%
Grand Theft Auto VI 214% 342%

In terms of overall gaming performance, the graphical capabilities of the AMD Radeon HD 8870 (OEM) are significantly better than the AMD Radeon HD 6870 IceQ X Edition.

The HD 8870 has a 100 MHz higher core clock speed and 24 more Texture Mapping Units than the HD 6870. This results in the HD 8870 providing 29.6 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 HD 8870 has a 100 MHz higher core clock speed than the HD 6870, but the HD 6870 has 8 more Render Output Units than the HD 8870. As a result, the HD 6870 exhibits a 4.8 GPixel/s better Pixel Fill Rate than the HD 8870. However, both GPUs support DirectX 9 or above, and pixeling performance is only really relevant when comparing older cards.

The HD 8870 was released over a year more recently than the HD 6870, and so the HD 8870 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 HD 8870 has 1024 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 HD 8870 also has superior memory performance overall.

The HD 8870 has 19.2 GB/sec greater memory bandwidth than the HD 6870, which means that the memory performance of the HD 8870 is slightly better than the HD 6870.

The Radeon HD 8870 (OEM) has 1280 Shader Processing Units and the Radeon HD 6870 IceQ X Edition has 1120. However, the actual shader performance of the HD 8870 is 1088 and the actual shader performance of the HD 6870 is 504. The HD 8870 having 584 better shader performance and an altogether better performance when taking into account other relevant data means that the HD 8870 delivers a significantly smoother and more efficient experience when processing graphical data than the HD 6870.

The HD 8870 transistor size technology is 12 nm (nanometers) smaller than the HD 6870. This means that the HD 8870 is expected to run slightly cooler and achieve higher clock frequencies than the HD 6870.

The Radeon HD 8870 (OEM) requires 175 Watts to run but there is no entry for the Radeon HD 6870 IceQ X Edition. We would recommend a PSU with at least 500 Watts for the HD 8870 and a PSU with at least 500 Watts for the HD 6870. The two GPUs have been recommended a PSU with the same amount of wattage. As such, there is no need to worry about which will more significantly affect your yearly electricity bills.

Game FPS Benchmarks On Ultra

GPU Architecture

Core Speed1000 MHzvs900 MHz
Boost Clock-vs-
ArchitectureGCN 1.0 Pitcairn XTTerascale 2 Barts XT
OC Potential Fair vs Fair
Driver Support Good vs Poor
Release Date08 Jan 2013vs01 Mar 2011
GPU LinkGD LinkGD Link
Approved
Comparison

Resolution Performance

1366x768 - green tick vs green tick -
1600x900
9.2
green tick vs
7.9
1920x1080
7.2
green tick vs
6
2560x1440
5.4
green tick vs
4.3
3840x2160
3.7
green tick vs -

GPU Memory

Memory2048 MBvs1024 MB
Memory Speed1200 MHzvs1050 MHz
Memory Bus256 Bitvs256 Bit
Memory TypeGDDR5vsGDDR5
Memory Bandwidth153.6GB/secvs134.4GB/sec
L2 Cache 512 KB green tick vs green tick 512 KB
Delta Color Compression no vs no
Memory Performance 0% green tick vs green tick 0%
Comparison

GPU Display

Shader Processing Units1280vs1120
Actual Shader Performance52%vs24%
Technology28nmvs40nm
Texture Mapping Units80vs56
Texture Rate80 GTexel/svs50.4 GTexel/s
Render Output Units24vs32
Pixel Rate24 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 Power175 Watts-
Recommended PSU500 Watts & 33 Ampsvs500 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 ReviewOverview
Radeon HD 8870 (OEM) is an OEM only, Performance Graphics Card based on the First Revision of the Graphics Core Next (GCN) Architecture.

Architecture
The GCN Architecture succeeds the 40nm Terascale Architecture. In addition to being produced with a 28nm Technology, the GCN Architecture adds other Technologies that allow for energy efficiency. For example, ZeroCore Power, a long idle power saving technology, allows the Graphics Cards to shut down by itself when the Monitor is turned off.
GCN also adds Improved Anisotropic Filtering, DirectX 11 Tessellation and the Partially Resident Textures (PRT) Technology, which enables future games to utilize ultra-high resolution textures with the same performance as today's small and often repetitive textures.

GPU
It equips a GPU Codenamed Pitcairn XT which has 20 Compute Units activated and thus offers 1280 Shader Processing Units, 80 TMUs and 32 ROPs. The Central Unit is clocked at 1000MHz.

Memory
The GPU accesses a 2GB frame buffer of fast GDDR5, through a 256-bit memory interface. The size of the frame buffer is adequate. The Memory Clock Operates at 1200MHz.

Power Consumption
With a rated board TDP of 175W, it requires at least a 500W PSU with two available 6-pin connectors.

Performance
Radeon HD 8870 (OEM) is a Direct Rebrand of Radeon HD 7870 and performs exactly like it.

System Suggestions
Radeon HD 8870 (OEM) is best suited for resolutions up to and including 1920x1080. We recommend a Strong Processor (Intel Core i5 Quad Core/AMD FX Six Core) and 8GB of RAM for Optimal Performance.
Radeon HD 6870 IceQ X Edition is a special edition of the high-end Radeon HD 6870. See its page for more information about it.
Compared to the Radeon HD 6870, this Special Edition has exactly the same specifications and the only new feature is an improved cooling system which doesn't affect performance directly.
Therefore, the performance is EXACTLY like the standard Radeon HD 6870 and enough to run today's demanding games at maximum settings while Very Demanding games like Metro 2033 or Max Payne 3, will probably require reduced settings to run smoothly.
Recommended CPU
Possible GPU Upgrades
GPU Variants
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