AMD Radeon HD 7990 vs AMD Radeon HD 6950

VS

We compared two Desktop platform GPUs: 3GB VRAM Radeon HD 7990 and 2GB VRAM Radeon HD 6950 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 7990 's Advantages

Released 2 years and 4 months late

Boost Clock1000MHz

More VRAM (3GB vs 2GB)

Larger VRAM bandwidth (288.0GB/s vs 160.0GB/s)

640 additional rendering cores

AMD Radeon HD 6950 's Advantages

Lower TDP (200W vs 375W)

Score

Benchmark

FP32 (float)

Radeon HD 7990 +81%

4.096 TFLOPS

Radeon HD 6950

2.253 TFLOPS

Radeon HD 7990

VS

Radeon HD 6950

Graphics Card

Apr 2013

Release Date

Dec 2010

Southern Islands

Generation

Northern Islands

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

950 MHz

Base Clock

-

1000 MHz

Boost Clock

-

1500 MHz

Memory Clock

1250 MHz

Memory

3GB

Memory Size

2GB

GDDR5

Memory Type

GDDR5

384bit

Memory Bus

256bit

288.0GB/s

Bandwidth

160.0GB/s

Render Config

-

SM Count

-

32

Compute Units

22

2048

Shading Units

1408

128

TMUs

88

32

ROPs

32

-

Tensor Cores

-

RT Cores

-

16 KB (per CU)

L1 Cache

8 KB (per CU)

768 KB

L2 Cache

512 KB

Theoretical Performance

32.00 GPixel/s

Pixel Rate

25.60 GPixel/s

128.0 GTexel/s

Texture Rate

70.40 GTexel/s

-

FP16 (half)

-

4.096 TFLOPS

FP32 (float)

2.253 TFLOPS

1024 GFLOPS

FP64 (double)

563.2 GFLOPS

Graphics Processor

Malta

GPU Name

Cayman

Malta XT (215-0849026)

GPU Variant

Cayman PRO (215-0807019)

GCN 1.0

Architecture

TeraScale 3

TSMC

Foundry

TSMC

28 nm

Process Size

40 nm

4.313 billion

Transistors

2.64 billion

365 mm²

Die Size

389 mm²

Board Design

375W

TDP

200W

750 W

Suggested PSU

550 W

1x DVI 4x mini-DisplayPort 1.2

Outputs

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

2x 8-pin

Power Connectors

2x 6-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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