AMD Radeon HD 7970 vs AMD Radeon R7 250X

VS

We compared two Desktop platform GPUs: 3GB VRAM Radeon HD 7970 and 1024MB VRAM Radeon R7 250X to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 7970 's Advantages

More VRAM (3GB vs 1GB)

Larger VRAM bandwidth (264.0GB/s vs 72.00GB/s)

1408 additional rendering cores

AMD Radeon R7 250X 's Advantages

Released 2 years and 2 months late

Lower TDP (80W vs 250W)

Score

Benchmark

FP32 (float)

Radeon HD 7970 +211%

3.789 TFLOPS

Radeon R7 250X

1.216 TFLOPS

Radeon HD 7970

VS

Radeon R7 250X

Graphics Card

Dec 2011

Release Date

Feb 2014

Southern Islands

Generation

Volcanic Islands

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

Base Clock

-

Boost Clock

-

1375 MHz

Memory Clock

1125 MHz

Memory

3GB

Memory Size

1024MB

GDDR5

Memory Type

GDDR5

384bit

Memory Bus

128bit

264.0GB/s

Bandwidth

72.00GB/s

Render Config

-

SM Count

-

32

Compute Units

10

2048

Shading Units

640

128

TMUs

40

32

ROPs

16

-

Tensor Cores

-

RT Cores

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

768 KB

L2 Cache

256 KB

Theoretical Performance

29.60 GPixel/s

Pixel Rate

15.20 GPixel/s

118.4 GTexel/s

Texture Rate

38.00 GTexel/s

-

FP16 (half)

-

3.789 TFLOPS

FP32 (float)

1216 GFLOPS

947.2 GFLOPS

FP64 (double)

76.00 GFLOPS

Graphics Processor

Tahiti

GPU Name

Cape Verde

Tahiti XT (215-0821060)

GPU Variant

Cape Verde XT

GCN 1.0

Architecture

GCN 1.0

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

4.313 billion

Transistors

1.5 billion

352 mm²

Die Size

123 mm²

Board Design

250W

TDP

80W

600 W

Suggested PSU

250 W

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

Outputs

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

1x 6-pin + 1x 8-pin

Power Connectors

1x 6-pin

Graphics Features

12 (11_1)

DirectX

12 (11_1)

4.6

OpenGL

4.6

1.2

OpenCL

1.2

Vulkan

1.2

-

CUDA

-

5.1

Shader Model

5.1

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