AMD Radeon HD 7870 XT vs ATI Radeon HD 5870

VS

AMD Radeon HD 7870 XT

ATI Radeon HD 5870

We compared two Desktop platform GPUs: 2GB VRAM Radeon HD 7870 XT and 1024MB VRAM Radeon HD 5870 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 7870 XT 's Advantages

Released 3 years and 2 months late

Boost Clock975MHz

More VRAM (2GB vs 1024GB)

Larger VRAM bandwidth (192.0GB/s vs 153.6GB/s)

Lower TDP (185W vs 188W)

ATI Radeon HD 5870 's Advantages

64 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 7870 XT +10%

2.995 TFLOPS

Radeon HD 5870

2.72 TFLOPS

Radeon HD 7870 XT

VS

Radeon HD 5870

Graphics Card

Nov 2012

Release Date

Sep 2009

Southern Islands

Generation

Evergreen

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

925 MHz

Base Clock

-

975 MHz

Boost Clock

-

1500 MHz

Memory Clock

1200 MHz

Memory

2GB

Memory Size

1024MB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

256bit

192.0GB/s

Bandwidth

153.6GB/s

Render Config

24

Compute Units

20

-

1536

Shading Units

1600

96

TMUs

80

32

ROPs

32

-

16 KB (per CU)

L1 Cache

8 KB (per CU)

512 KB

L2 Cache

512 KB

-

Theoretical Performance

31.20 GPixel/s

Pixel Rate

27.20 GPixel/s

93.60 GTexel/s

Texture Rate

68.00 GTexel/s

-

2.995 TFLOPS

FP32 (float)

2.720 TFLOPS

748.8 GFLOPS

FP64 (double)

544.0 GFLOPS

Board Design

185W

TDP

188W

450 W

Suggested PSU

450 W

1x DVI 1x HDMI 1.4a 2x mini-DisplayPort 1.2

Outputs

2x DVI 1x HDMI 1.3a 1x DisplayPort 1.1

2x 6-pin

Power Connectors

2x 6-pin

Graphics Processor

Tahiti

GPU Name

Cypress

Tahiti LE (215-0821122)

GPU Variant

Cypress XT (215-0735033)

GCN 1.0

Architecture

TeraScale 2

TSMC

Foundry

TSMC

28 nm

Process Size

40 nm

4.313 billion

Transistors

2.154 billion

352 mm²

Die Size

334 mm²

Graphics Features

12 (11_1)

DirectX

11.2 (11_0)

4.6

OpenGL

4.4

1.2

OpenCL

1.2

Vulkan

N/A

-

5.1

Shader Model

5.0

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