AMD Radeon R7 250X vs AMD Radeon HD 7990

VS

We compared two Desktop platform GPUs: 1024MB VRAM Radeon R7 250X and 3GB VRAM Radeon HD 7990 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon R7 250X 's Advantages

Released 10 months late

Lower TDP (80W vs 375W)

AMD Radeon HD 7990 's Advantages

Boost Clock1000MHz

More VRAM (3GB vs 1GB)

Larger VRAM bandwidth (288.0GB/s vs 72.00GB/s)

1408 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon R7 250X

1.216 TFLOPS

Radeon HD 7990 +236%

4.096 TFLOPS

Radeon R7 250X

VS

Radeon HD 7990

Graphics Card

Feb 2014

Release Date

Apr 2013

Volcanic Islands

Generation

Southern Islands

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

Base Clock

950 MHz

-

Boost Clock

1000 MHz

1125 MHz

Memory Clock

1500 MHz

Memory

1024MB

Memory Size

3GB

GDDR5

Memory Type

GDDR5

128bit

Memory Bus

384bit

72.00GB/s

Bandwidth

288.0GB/s

Render Config

-

SM Count

-

10

Compute Units

32

640

Shading Units

2048

40

TMUs

128

16

ROPs

32

-

Tensor Cores

-

RT Cores

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

256 KB

L2 Cache

768 KB

Theoretical Performance

15.20 GPixel/s

Pixel Rate

32.00 GPixel/s

38.00 GTexel/s

Texture Rate

128.0 GTexel/s

-

FP16 (half)

-

1216 GFLOPS

FP32 (float)

4.096 TFLOPS

76.00 GFLOPS

FP64 (double)

1024 GFLOPS

Graphics Processor

Cape Verde

GPU Name

Malta

Cape Verde XT

GPU Variant

Malta XT (215-0849026)

GCN 1.0

Architecture

GCN 1.0

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

1.5 billion

Transistors

4.313 billion

123 mm²

Die Size

365 mm²

Board Design

80W

TDP

375W

250 W

Suggested PSU

750 W

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

Outputs

1x DVI 4x mini-DisplayPort 1.2

1x 6-pin

Power Connectors

2x 8-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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