AMD Radeon R7 250 vs AMD Radeon HD 7990

VS

We compared two Desktop platform GPUs: 1024MB VRAM Radeon R7 250 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 250 's Advantages

Released 6 months late

Lower TDP (55W vs 375W)

AMD Radeon HD 7990 's Advantages

Boost Clock1000MHz

More VRAM (3GB vs 1GB)

Larger VRAM bandwidth (288.0GB/s vs 28.80GB/s)

1536 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon R7 250

0.717 TFLOPS

Radeon HD 7990 +471%

4.096 TFLOPS

Radeon R7 250

VS

Radeon HD 7990

Graphics Card

Oct 2013

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

900 MHz

Memory Clock

1500 MHz

Memory

1024MB

Memory Size

3GB

DDR3

Memory Type

GDDR5

128bit

Memory Bus

384bit

28.80GB/s

Bandwidth

288.0GB/s

Render Config

-

SM Count

-

8

Compute Units

32

512

Shading Units

2048

32

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

11.20 GPixel/s

Pixel Rate

32.00 GPixel/s

22.40 GTexel/s

Texture Rate

128.0 GTexel/s

-

FP16 (half)

-

716.8 GFLOPS

FP32 (float)

4.096 TFLOPS

44.80 GFLOPS

FP64 (double)

1024 GFLOPS

Graphics Processor

Cape Verde

GPU Name

Malta

Cape Verde PRO

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

55W

TDP

375W

250 W

Suggested PSU

750 W

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

Outputs

1x DVI 4x mini-DisplayPort 1.2

None

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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