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AMD Radeon HD 7870 XT

Graphics Processor
Tahiti
Cores
1536
TMUs
96
ROPs
32
Memory Size
2 GB
Memory Type
GDDR5
Bus Width
256 bit
The Radeon HD 7870 XT was 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.
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 PCI-Express 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
(215-0821122)
Architecture
GCN 1.0
Foundry
TSMC
Process Size
28 nm
Transistors
4,313 million
Die Size
352 mm²

Graphics Card

Release Date
Nov 19th, 2012
Generation
Southern Islands
(HD 7800)
Production
End-of-life
Launch Price
270 USD
Bus Interface
PCIe 3.0 x16
Reviews
95 in our database

Relative Performance

4%
GeForce 210
5%
GeForce 9400 GT
6%
Radeon HD 4550
8%
Radeon HD 5450
9%
Radeon HD 6450
9%
GeForce GT 520
12%
GeForce GT 220
15%
GeForce GT 430
15%
Radeon HD 5570
17%
Radeon HD 4670
18%
GeForce GT 440
18%
GeForce GT 240
21%
GeForce 9600 GT
22%
Radeon HD 5670
24%
GeForce GT 640
24%
GeForce 9800 GT
25%
Radeon HD 6670
26%
Radeon HD 4830
28%
Radeon HD 4770
29%
Radeon HD 4850
30%
GeForce GTS 250
31%
GeForce GTS 450
32%
Radeon HD 5750
37%
Radeon HD 7750
37%
Radeon HD 5770
38%
GeForce GTX 260
38%
Radeon HD 4870
38%
Radeon Vega 8
39%
GeForce GTX 550 Ti
39%
GeForce GTX 650
41%
Radeon HD 5830
43%
Radeon HD 6790
44%
Radeon HD 4890
46%
GeForce GTX 460
46%
Radeon RX Vega 11
46%
GeForce GT 1030
47%
GeForce GTX 275
47%
Radeon HD 7770 GHz Edition
47%
GeForce GTX 280
48%
GeForce GTX 465
50%
Radeon HD 6850
51%
GeForce GTX 285
55%
Radeon HD 5850
56%
Radeon HD 7790
56%
GeForce GTX 650 Ti
58%
Radeon RX 550
59%
GeForce GTX 470
61%
Radeon HD 6870
65%
Radeon HD 5870
67%
GeForce GTX 560 Ti
67%
Radeon HD 4870 X2
68%
GeForce GTX 750 Ti
69%
Radeon HD 6950
71%
GeForce GTX 295
72%
GeForce GTX 650 Ti Boost
72%
Radeon HD 7850
74%
GeForce GTX 480
77%
Radeon HD 6970
79%
Radeon R7 265
80%
Radeon RX 460
80%
Radeon R7 370
80%
GeForce GTX 660
80%
GeForce GTX 570
82%
Radeon RX 560
87%
GeForce GTX 950
88%
Radeon HD 7870 GHz Edition
90%
Radeon R9 270X
91%
GeForce GTX 660 Ti
91%
GeForce GTX 580
92%
GeForce GTX 1050
92%
Radeon HD 7950
94%
Radeon HD 5970
97%
GeForce GTX 760
100%
Radeon HD 7870 XT
104%
GeForce GTX 670
107%
GeForce GTX 960
109%
Radeon R9 380
110%
Radeon R9 285
111%
Radeon HD 7970
112%
GeForce GTX 680
115%
GeForce GTX 1050 Ti
118%
GeForce GTX 770
121%
Radeon HD 6990
124%
Radeon R9 280X
125%
GeForce GTX 590
125%
Radeon HD 7970 GHz Edition
139%
GeForce GTX 780
144%
GeForce GTX 1650
153%
Radeon RX 470
155%
Radeon R9 290
165%
Radeon R9 390
166%
Radeon R9 290X
169%
GeForce GTX 970
171%
GeForce GTX TITAN
172%
Radeon RX 570
173%
GeForce GTX 780 Ti
176%
Radeon R9 390X
176%
Radeon HD 7990
177%
Radeon RX 480
179%
GeForce GTX 690
188%
Radeon RX 580
192%
GeForce GTX 980
195%
GeForce GTX 1060 6 GB
195%
Radeon R9 FURY
196%
Radeon RX 590
214%
Radeon R9 295X2
218%
Radeon R9 FURY X
221%
GeForce GTX 980 Ti
238%
GeForce GTX TITAN X
250%
GeForce GTX 1660 Ti
251%
GeForce GTX 1070
262%
Radeon RX Vega 56
284%
GeForce GTX 1070 Ti
292%
Radeon RX Vega 64
292%
GeForce RTX 2060
299%
GeForce GTX 1080
343%
Radeon VII
343%
GeForce RTX 2070
360%
TITAN X Pascal
369%
GeForce GTX 1080 Ti
399%
GeForce RTX 2080
461%
GeForce RTX 2080 Ti
Based on TPU review data: "Performance Summary" at 1920x1080
Performance estimated based on architecture, shader count and clocks.

Clock Speeds

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

Memory

Memory Size
2 GB
Memory Type
GDDR5
Memory Bus
256 bit
Bandwidth
192.0 GB/s

Render Config

Shading Units
1536
TMUs
96
ROPs
32
Compute Units
24
L1 Cache
16 KB (per CU)
L2 Cache
512 KB

Theoretical Performance

Pixel Rate
31.20 GPixel/s
Texture Rate
93.60 GTexel/s
FP32 (float) performance
2.995 TFLOPS
FP64 (double) performance
748.8 GFLOPS (1:4)

Board Design

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

Graphics Features

DirectX
12.0 (11_1)
OpenGL
4.6
OpenCL
1.2
Vulkan
1.1.101
Shader Model
5.1

Tahiti GPU Notes

Architecture Codename: Southern Islands
CLRX Version: GCN 1.0
Graphics/Compute: GFX6 (gfx600)
Display Core Engine: 6.0
Unified Video Decoder: 3.2
Video Compression Engine: 1.0

Exact Transistor Count: 4,312,711,873

Retail boards based on this design (7)

Name GPU Clock Boost Clock Memory Clock Other Changes
Club 3D HD 7870 XT jokerCard 925 MHz 975 MHz 1500 MHz 10.55 inches/268 mm
Dataland PCS+ HD 7870 MYST. Edition 925 MHz 975 MHz 1500 MHz
PowerColor PCS+ HD 7870 EZ Edition 925 MHz 975 MHz 1500 MHz
PowerColor PCS+ HD 7870 MYST. Edition 925 MHz 975 MHz 1500 MHz
Sapphire HD 7870 XT w/ Boost 925 MHz 975 MHz 1500 MHz 10.827 inches/275 mm
VTX3D HD 7870 Black Edition 925 MHz 975 MHz 1500 MHz
XFX Double D HD 7870 925 MHz 1000 MHz 1250 MHz 9.5 inches/241 mm