AMD Radeon R9 270 1024SP vs AMD Radeon HD 7870 XT

VS

AMD Radeon R9 270 1024SP

AMD Radeon HD 7870 XT

We compared two Desktop platform GPUs: 2GB VRAM Radeon R9 270 1024SP and 2GB VRAM Radeon HD 7870 XT to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon R9 270 1024SP 's Advantages

Released 2 years and 4 months late

Lower TDP (150W vs 185W)

AMD Radeon HD 7870 XT 's Advantages

Boost Clock has increased by 5% (975MHz vs 925MHz)

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

512 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon R9 270 1024SP

1.894 TFLOPS

Radeon HD 7870 XT +58%

2.995 TFLOPS

Radeon R9 270 1024SP

VS

Radeon HD 7870 XT

Graphics Card

Mar 2015

Release Date

Nov 2012

Volcanic Islands

Generation

Southern Islands

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

900 MHz

Base Clock

925 MHz

Boost Clock

975 MHz

1200 MHz

Memory Clock

1500 MHz

Memory

2GB

Memory Size

2GB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

256bit

153.6GB/s

Bandwidth

192.0GB/s

Render Config

16

Compute Units

24

-

1024

Shading Units

1536

64

TMUs

96

32

ROPs

32

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

512 KB

L2 Cache

512 KB

-

Theoretical Performance

29.60 GPixel/s

Pixel Rate

31.20 GPixel/s

59.20 GTexel/s

Texture Rate

93.60 GTexel/s

-

1.894 TFLOPS

FP32 (float)

2.995 TFLOPS

118.4 GFLOPS

FP64 (double)

748.8 GFLOPS

Board Design

150W

TDP

185W

450 W

Suggested PSU

450 W

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

Outputs

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

1x 6-pin

Power Connectors

2x 6-pin

Graphics Processor

Pitcairn

GPU Name

Tahiti

Pitcairn PRO (215-0828062)

GPU Variant

Tahiti LE (215-0821122)

GCN 1.0

Architecture

GCN 1.0

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

2.8 billion

Transistors

4.313 billion

212 mm²

Die Size

352 mm²

Graphics Features

12 (11_1)

DirectX

12 (11_1)

4.6

OpenGL

4.6

1.2

OpenCL

1.2

Vulkan

1.2

-

5.1

Shader Model

5.1

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