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Gaming Performance Comparison

Recommended System Requirements
Game Radeon HD 7850 XFX Core Edition Radeon HD 3870
Cyberpunk 2077 170% 858%
Assassins Creed: Valhalla 149% 784%
Call of Duty: Black Ops Cold War 177% 884%
Genshin Impact 172% 867%
eFootball PES 2021 37% 388%
Marvel's Avengers 158% 815%
Watch Dogs Legion 163% 832%
FIFA 21 37% 388%
Mafia: Definitive Edition 290% 1286%
Microsoft Flight Simulator 141% 755%

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 3870.

The HD 7850 has a 83 MHz higher core clock speed and 48 more Texture Mapping Units than the Radeon HD 3870. This results in the HD 7850 providing 42.6 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 7850 has a 83 MHz higher core clock speed and 16 more Render Output Units than the Radeon HD 3870. This results in the HD 7850 providing 15.1 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 Radeon HD 3870, 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 Radeon HD 3870 when running the latest games.

The HD 7850 has 512 MB more video memory than the Radeon HD 3870, 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 87.9 GB/sec greater memory bandwidth than the Radeon HD 3870, which means that the memory performance of the HD 7850 is much better than the Radeon HD 3870.

The Radeon HD 7850 XFX Core Edition has 1024 Shader Processing Units and the Radeon HD 3870 has 320. However, the actual shader performance of the HD 7850 is 749 and the actual shader performance of the Radeon HD 3870 is 249. The HD 7850 having 500 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 Radeon HD 3870.

The HD 7850 transistor size technology is 27 nm (nanometers) smaller than the Radeon HD 3870. This means that the HD 7850 is expected to run slightly cooler and achieve higher clock frequencies than the Radeon HD 3870.

The Radeon HD 3870 requires 106 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 450 Watts for the Radeon HD 3870. The HD 7850 has been recommended a PSU with 50 Watts more than the Radeon HD 3870. The difference is significant enough that the HD 7850 may have a slight adverse affect on your yearly electricity bills in comparison to the Radeon HD 3870.

Game FPS Benchmarks On Ultra

GPU Architecture

Core Speed860 MHzvs777 MHz
Boost Clock-vs-
ArchitectureGCN 1.0 Pitcairn PROR600 RV670 XT
OC Potential Good vs Poor
Driver Support Good vs Discontinued
Release Date01 Mar 2012vs19 Nov 2007
GPU LinkGD LinkGD Link

Resolution Performance

1366x768 - green tick vs green tick -
green tick vs -
green tick vs -
green tick vs -
green tick vs -

GPU Memory

Memory1024 MBvs512 MB
Memory Speed1250 MHzvs1126 MHz
Memory Bus256 Bitvs256 Bit
Memory TypeGDDR5vsGDDR4
Memory Bandwidth160GB/secvs72.1GB/sec
L2 Cache 512 KB green tick vs 0 KB
Delta Color Compression no vs no
Memory Performance 0% green tick vs green tick 0%

GPU Display

Shader Processing Units1024vs320
Actual Shader Performance36%vs12%
Texture Mapping Units64vs16
Texture Rate55 GTexel/svs12.4 GTexel/s
Render Output Units32vs16
Pixel Rate27.5 GPixel/svs12.4 GPixel/s

GPU Outputs

Max Digital Resolution (WxH)4096x2160vs2560x1600
VGA Connections0vs1
DVI Connections2vs1
HDMI Connections1vs1
DisplayPort Connections-vs0

GPU Power Requirements

Max Power-106 Watts
Recommended PSU500 Wattsvs450 Watts & 28 Amps

GPU Features

Shader Model5.0vs4.1
Open GL4.4vs3.3
Open CL-vs-
Notebook GPUnono

GPU Supporting Hardware

Recommended ProcessorIntel Core i5-3330 3.0GHzvsIntel Core 2 Duo E6850 3.0GHz
Recommended RAM8 GBvs4 GB
Maximum Recommended Gaming Resolution1920x1080vs1440x900

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 3870 is a high-end GPU based on the 55nm, second unified shader architecture, R600.
It's based on the RV670 XT Core and offers 320 Shader Processing Units, 16 TMUs and 16 ROPs a 256-bit memory interface of energy efficient GDDR4. The central unit runs at 777MHz and the memory clock runs at up to 1126MHz.
Compared to Radeon HD 3850, it offers extra bandwidth (thanks to the higher operating memory clock resultant from using GDDR4) and the central unit is higher clocked. However, it also consumes up to around extra 30W. This value would be higher were standard GDDR3 used.
Today's modern games should run fluently at medium settings but with modest resolutions. DirectX 11 games aren't supported.
Recommended CPU
Possible GPU Upgrades
GPU Variants