AMD Radeon R9 295X2 vs AMD Radeon HD 7970

VS

AMD Radeon R9 295X2

AMD Radeon HD 7970

We compared two Desktop platform GPUs: 4GB VRAM Radeon R9 295X2 and 3GB VRAM Radeon HD 7970 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon R9 295X2 's Advantages

Released 2 years and 4 months late

More VRAM (4GB vs 3GB)

Larger VRAM bandwidth (320.0GB/s vs 264.0GB/s)

768 additional rendering cores

AMD Radeon HD 7970 's Advantages

Lower TDP (250W vs 500W)

Score

Benchmark

FP32 (float)

Radeon R9 295X2 +51%

5.733 TFLOPS

Radeon HD 7970

3.789 TFLOPS

Radeon R9 295X2

VS

Radeon HD 7970

Graphics Card

Apr 2014

Release Date

Dec 2011

Volcanic Islands

Generation

Southern Islands

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

1250 MHz

Memory Clock

1375 MHz

Memory

4GB

Memory Size

3GB

GDDR5

Memory Type

GDDR5

512bit

Memory Bus

384bit

320.0GB/s

Bandwidth

264.0GB/s

Render Config

44

Compute Units

32

-

2816

Shading Units

2048

176

TMUs

128

64

ROPs

32

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

1024 KB

L2 Cache

768 KB

-

Theoretical Performance

65.15 GPixel/s

Pixel Rate

29.60 GPixel/s

179.2 GTexel/s

Texture Rate

118.4 GTexel/s

-

5.733 TFLOPS

FP32 (float)

3.789 TFLOPS

716.7 GFLOPS

FP64 (double)

947.2 GFLOPS

Board Design

500W

TDP

250W

900 W

Suggested PSU

600 W

1x DVI 4x mini-DisplayPort 1.2

Outputs

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

2x 8-pin

Power Connectors

1x 6-pin + 1x 8-pin

Graphics Processor

Vesuvius

GPU Name

Tahiti

Vesuvius XT (215-0852022)

GPU Variant

Tahiti XT (215-0821060)

GCN 2.0

Architecture

GCN 1.0

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

6.2 billion

Transistors

4.313 billion

438 mm²

Die Size

352 mm²

Graphics Features

12 (12_0)

DirectX

12 (11_1)

4.6

OpenGL

4.6

2.0

OpenCL

1.2

Vulkan

1.2

-

6.3

Shader Model

5.1

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