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AMD Radeon HD 7870 XT

AMD Radeon HD 7870 XT Image AMD Tahiti Image
The Radeon HD 7870 XT is a performance graphics card by AMD, launched in November 2012. Built on the 28 nm process, and based on the Tahiti graphics processor, in its Tahiti LE variant, the card supports DirectX 12.0. The Tahiti graphics processor is a large chip with a die area of 352 mm² and 4,313 million transistors. Unlike the fully unlocked Radeon HD 7970, which uses the same GPU but has all 2048 shaders enabled, AMD has disabled some shading units on the Radeon HD 7870 XT to reach the product's target shader count. It features 1536 shading units, 96 texture mapping units and 32 ROPs. AMD has placed 2,048 MB GDDR5 memory on the card, which are connected using a 256-bit memory interface. The GPU is operating at a frequency of 925 MHz, which can be boosted up to 975 MHz, memory is running at 1500 MHz.
We recommend the AMD Radeon HD 7870 XT for gaming with highest details at resolutions up to, and including, 1920x1080.
Being a dual-slot card, the AMD Radeon HD 7870 XT draws power from 2x 6-pin power connectors, with power draw rated at 185 W maximum. Display outputs include: 1x DVI, 1x HDMI, 2x mini-DisplayPort. Radeon HD 7870 XT is connected to the rest of the system using a PCIe 3.0 x16 interface. The card measures 267 mm in length, and features a dual-slot cooling solution. Its price at launch was 270 US Dollars.

Graphics Processor

GPU Name: Tahiti
GPU Variant: Tahiti LE
Architecture: GCN 1.0
Process Size: 28 nm
Transistors: 4,313 million
Die Size: 352 mm²

Graphics Card

Released: Nov 19th, 2012
Production Status: Active
Launch Price: 270 USD
Bus Interface: PCIe 3.0 x16

Clock Speeds

GPU Clock: 925 MHz
Boost Clock: 975 MHz
Memory Clock: 1500 MHz
6000 MHz effective


Memory Size: 2048 MB
Memory Type: GDDR5
Memory Bus: 256 bit
Bandwidth: 192.0 GB/s

Render Config

Shading Units: 1536
TMUs: 96
ROPs: 32
Compute Units: 24
Pixel Rate: 31.20 GPixel/s
Texture Rate: 93.6 GTexel/s
Floating-point performance: 2,995.2 GFLOPS

Board Design

Slot Width: Dual-slot
Length: 10.5 inches
267 mm
TDP: 185 W
Outputs: 1x DVI
2x mini-DisplayPort
Power Connectors: 2x 6-pin
Board Number: C474

Graphics Features

DirectX: 12.0
OpenGL: 4.5
OpenCL: 1.2
Shader Model: 5.0


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Our review database contains 95 reviews of the Radeon HD 7870 XT.

Card Notes

128 Z/Stencil ROP Units

Tahiti GPU Notes

Exact Transistor Count: 4,312,711,873

Instruction Set:

Retail boards based on this design

Name GPU Clock Memory Clock Other Changes
Club 3D HD 7870 XT jokerCard 925 MHz 1500 MHz 10.55 inches
Dataland PCS+ HD 7870 MYST. Edition 925 MHz 1500 MHz
PowerColor PCS+ HD 7870 EZ Edition 925 MHz 1500 MHz
PowerColor PCS+ HD 7870 MYST. Edition 925 MHz 1500 MHz
Sapphire HD 7870 XT Boost 925 MHz 1500 MHz 10.827 inches
VTX3D HD 7870 Black Edition 925 MHz 1500 MHz
XFX Double D HD 7870 925 MHz 1250 MHz Boost Clock: 1000 MHz, 9.5 inches