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Gaming Performance Comparison

Recommended System Requirements
Game Radeon HD 7850 XFX Core Edition Radeon HD 2900 XT 512MB
Halo: Reach 18% 191%
Cyberpunk 2077 254% 1157%
Red Dead Redemption 2 158% 815%
Dragon Ball Z Kakarot 59% 465%
Call of Duty: Modern Warfare 158% 815%
Microsoft Flight Simulator 254% 1157%
Doom Eternal 122% 687%
Grand Theft Auto VI 294% 1299%
FIFA 20 37% 388%
Need For Speed Heat 158% 815%

In terms of overall gaming performance, the graphical capabilities of the AMD Radeon HD 7850 XFX Core Edition are massively better than the AMD Radeon HD 2900 XT 512MB.

The HD 7850 has a 117 MHz higher core clock speed and 48 more Texture Mapping Units than the HD 2900 XT. This results in the HD 7850 providing 43.1 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 7850 has a 117 MHz higher core clock speed and 16 more Render Output Units than the HD 2900 XT. This results in the HD 7850 providing 15.6 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 HD 7850 was released over three years more recently than the HD 2900 XT, and so the HD 7850 is likely to have far better driver support, meaning it will be much more optimized and ultimately superior to the HD 2900 XT when running the latest games.

The HD 7850 has 512 MB more video memory than the HD 2900 XT, so is likely to be much better at displaying game textures at higher resolutions. This is supported by the fact that the HD 7850 also has superior memory performance overall.

The HD 7850 has 54 GB/sec greater memory bandwidth than the HD 2900 XT, which means that the memory performance of the HD 7850 is much better than the HD 2900 XT.

The Radeon HD 7850 XFX Core Edition has 1024 Shader Processing Units and the Radeon HD 2900 XT 512MB has 320. However, the actual shader performance of the HD 7850 is 749 and the actual shader performance of the HD 2900 XT is 155. The HD 7850 having 594 better shader performance and an altogether better performance when taking into account other relevant data means that the HD 7850 delivers a massively smoother and more efficient experience when processing graphical data than the HD 2900 XT.

The HD 7850 transistor size technology is 52 nm (nanometers) smaller than the HD 2900 XT. This means that the HD 7850 is expected to run massively cooler and achieve higher clock frequencies than the HD 2900 XT.

The Radeon HD 2900 XT 512MB requires 215 Watts to run but there is no entry for the HD 7850. We would recommend a PSU with at least 500 Watts for the HD 7850 and a PSU with at least 550 Watts for the HD 2900 XT. The HD 2900 XT has been recommended a PSU with 50 Watts more than the HD 7850. The difference is significant enough that the HD 2900 XT may have a slight adverse affect on your yearly electricity bills in comparison to the HD 7850.

Game FPS Benchmarks On Ultra

GPU Architecture

Core Speed860 MHzvs743 MHz
Boost Clock-vs-
ArchitectureGCN 1.0 Pitcairn PROR600 XT
OC Potential Good vs Poor
Driver Support Good vs -
Release Date01 Mar 2012vs14 May 2007
GPU LinkGD LinkGD Link
Approved
Comparison

Resolution Performance

1366x768 - green tick vs green tick -
1600x900
8.3
green tick vs -
1920x1080
6.4
green tick vs -
2560x1440
4.7
green tick vs -
3840x2160
2.9
green tick vs -

GPU Memory

Memory1024 MBvs512 MB
Memory Speed1250 MHzvs828 MHz
Memory Bus256 Bitvs512 Bit
Memory TypeGDDR5vsGDDR3
Memory Bandwidth160GB/secvs106GB/sec
L2 Cache 512 KB green tick vs -
Delta Color Compression no vs no
Memory Performance 0% green tick vs green tick 0%
Comparison

GPU Display

Shader Processing Units1024vs320
Actual Shader Performance36%vs7%
Technology28nmvs80nm
Texture Mapping Units64vs16
Texture Rate55 GTexel/svs11.9 GTexel/s
Render Output Units32vs16
Pixel Rate27.5 GPixel/svs11.9 GPixel/s
Comparison

GPU Outputs

Max Digital Resolution (WxH)4096x2160vs2560x1600
VGA Connections0vs0
DVI Connections2vs2
HDMI Connections1vs0
DisplayPort Connections-vs-
Comparison

GPU Power Requirements

Max Power-215 Watts
Recommended PSU500 Wattsvs550 Watts & 35 Amps

GPU Features

DirectX12.0vs10
Shader Model5.0vs4.0
Open GL4.4vs3.1
Open CL-vs-
Notebook GPUnono
SLI/Crossfireyesvsyes
Dedicatedyesvsyes
Comparison

GPU Supporting Hardware

Recommended ProcessorIntel Core i5-3330 3.0GHzvsIntel Core 2 Quad Q6400 2.13GHz
Recommended RAM8 GBvs4 GB
Maximum Recommended Gaming Resolution1920x1080vs1366x768

Gaming Performance Value

Performance Value

GPU Mini Review

Mini ReviewRadeon HD 7850 XFX Core Edition is a special edition of the powerful Radeon HD 7850. See the standard version for more information about it.
This edition features a special cooling system that allows twice as much heat dissipation when compared to the reference AMD cooling system but its performance is still the same, as there's no over-clocking out of the box.
Radeon HD 2900 XT 512MB is a high-end GPU based on the 80nm variant of the second unified shader architecture, R600.
It's based on the R600 XT Core and offers 320 Shader Processing Units, 16 TMUs and 16 ROPs on a 512-bit memory interface of standard GDDR3. The central unit runs at 743MHz and the memory clock runs at up to 828MHz.
Its performance is somewhat faster than Radeon HD 2900 Pro due to being higher clocked and the extra memory bandwidth is bottlenecked by the small sized frame buffer and thus most games have to be played using a 1024x768 resolution but should be playable at high settings.
Recommended CPU
Possible GPU Upgrades
GPU Variants
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