AMD Radeon HD 6990 vs AMD Radeon R7 250XE

VS

AMD Radeon HD 6990

AMD Radeon R7 250XE

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

Main Differences

AMD Radeon HD 6990 's Advantages

More VRAM (2GB vs 1024GB)

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

896 additional rendering cores

AMD Radeon R7 250XE 's Advantages

Released 3 years and 5 months late

Lower TDP (80W vs 375W)

Score

Benchmark

FP32 (float)

Radeon HD 6990 +131%

2.55 TFLOPS

Radeon R7 250XE

1.101 TFLOPS

Radeon HD 6990

VS

Radeon R7 250XE

Graphics Card

Mar 2011

Release Date

Aug 2014

Northern Islands

Generation

Volcanic Islands

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

1250 MHz

Memory Clock

1125 MHz

Memory

2GB

Memory Size

1024MB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

128bit

160.0GB/s

Bandwidth

72.00GB/s

Render Config

24

Compute Units

10

-

1536

Shading Units

640

96

TMUs

40

32

ROPs

16

-

8 KB (per CU)

L1 Cache

16 KB (per CU)

512 KB

L2 Cache

256 KB

-

Theoretical Performance

26.56 GPixel/s

Pixel Rate

13.76 GPixel/s

79.68 GTexel/s

Texture Rate

34.40 GTexel/s

-

2.550 TFLOPS

FP32 (float)

1101 GFLOPS

637.4 GFLOPS

FP64 (double)

68.80 GFLOPS

Board Design

375W

TDP

80W

750 W

Suggested PSU

250 W

1x DVI 4x mini-DisplayPort 1.2

Outputs

1x DVI 1x HDMI 1.4a 1x VGA

2x 8-pin

Power Connectors

None

Graphics Processor

Antilles

GPU Name

Cape Verde

Antilles XT (215-0807027)

GPU Variant

Cape Verde XT

TeraScale 3

Architecture

GCN 1.0

TSMC

Foundry

TSMC

40 nm

Process Size

28 nm

2.64 billion

Transistors

1.5 billion

389 mm²

Die Size

123 mm²

Graphics Features

11.2 (11_0)

DirectX

12 (11_1)

4.4

OpenGL

4.6

1.2

OpenCL

1.2

N/A

Vulkan

1.2

-

5.0

Shader Model

5.1

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