AMD Radeon R7 250X vs AMD Radeon HD 6990

VS

We compared two Desktop platform GPUs: 1024MB VRAM Radeon R7 250X and 2GB VRAM Radeon HD 6990 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon R7 250X 's Advantages

Released 2 years and 11 months late

Lower TDP (80W vs 375W)

AMD Radeon HD 6990 's Advantages

More VRAM (2GB vs 1GB)

Larger VRAM bandwidth (160.0GB/s vs 72.00GB/s)

896 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon R7 250X

1.216 TFLOPS

Radeon HD 6990 +109%

2.55 TFLOPS

Radeon R7 250X

VS

Radeon HD 6990

Graphics Card

Feb 2014

Release Date

Mar 2011

Volcanic Islands

Generation

Northern Islands

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

Base Clock

-

Boost Clock

-

1125 MHz

Memory Clock

1250 MHz

Memory

1024MB

Memory Size

2GB

GDDR5

Memory Type

GDDR5

128bit

Memory Bus

256bit

72.00GB/s

Bandwidth

160.0GB/s

Render Config

-

SM Count

-

10

Compute Units

24

640

Shading Units

1536

40

TMUs

96

16

ROPs

32

-

Tensor Cores

-

RT Cores

-

16 KB (per CU)

L1 Cache

8 KB (per CU)

256 KB

L2 Cache

512 KB

Theoretical Performance

15.20 GPixel/s

Pixel Rate

26.56 GPixel/s

38.00 GTexel/s

Texture Rate

79.68 GTexel/s

-

FP16 (half)

-

1216 GFLOPS

FP32 (float)

2.550 TFLOPS

76.00 GFLOPS

FP64 (double)

637.4 GFLOPS

Graphics Processor

Cape Verde

GPU Name

Antilles

Cape Verde XT

GPU Variant

Antilles XT (215-0807027)

GCN 1.0

Architecture

TeraScale 3

TSMC

Foundry

TSMC

28 nm

Process Size

40 nm

1.5 billion

Transistors

2.64 billion

123 mm²

Die Size

389 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

11.2 (11_0)

4.6

OpenGL

4.4

1.2

OpenCL

1.2

Vulkan

N/A

-

CUDA

-

5.1

Shader Model

5.0

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