AMD Radeon R9 270X vs AMD Radeon HD 7870 XT

VS

AMD Radeon R9 270X

AMD Radeon HD 7870 XT

We compared two Desktop platform GPUs: 2GB VRAM Radeon R9 270X 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 270X 's Advantages

Released 11 months late

Boost Clock has increased by 8% (1050MHz vs 975MHz)

Lower TDP (180W vs 185W)

AMD Radeon HD 7870 XT 's Advantages

Larger VRAM bandwidth (192.0GB/s vs 179.2GB/s)

256 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon R9 270X

2.688 TFLOPS

Radeon HD 7870 XT +11%

2.995 TFLOPS

Radeon R9 270X

VS

Radeon HD 7870 XT

Graphics Card

Oct 2013

Release Date

Nov 2012

Volcanic Islands

Generation

Southern Islands

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

1000 MHz

Base Clock

925 MHz

1050 MHz

Boost Clock

975 MHz

1400 MHz

Memory Clock

1500 MHz

Memory

2GB

Memory Size

2GB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

256bit

179.2GB/s

Bandwidth

192.0GB/s

Render Config

20

Compute Units

24

-

1280

Shading Units

1536

80

TMUs

96

32

ROPs

32

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

512 KB

L2 Cache

512 KB

-

Theoretical Performance

33.60 GPixel/s

Pixel Rate

31.20 GPixel/s

84.00 GTexel/s

Texture Rate

93.60 GTexel/s

-

2.688 TFLOPS

FP32 (float)

2.995 TFLOPS

168.0 GFLOPS

FP64 (double)

748.8 GFLOPS

Board Design

180W

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

2x 6-pin

Power Connectors

2x 6-pin

Graphics Processor

Curacao

GPU Name

Tahiti

Curacao XT (215-0848004)

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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