AMD Radeon HD 6950 vs NVIDIA GeForce GTX 980

VS

AMD Radeon HD 6950

NVIDIA GeForce GTX 980

We compared two Desktop platform GPUs: 2GB VRAM Radeon HD 6950 and 4GB VRAM GeForce GTX 980 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GTX 980 's Advantages

Released 3 years and 9 months late

Boost Clock1216MHz

More VRAM (4GB vs 2GB)

Larger VRAM bandwidth (224.4GB/s vs 160.0GB/s)

640 additional rendering cores

Lower TDP (165W vs 200W)

Score

Benchmark

FP32 (float)

Radeon HD 6950

2.253 TFLOPS

GeForce GTX 980 +121%

4.981 TFLOPS

Radeon HD 6950

VS

GeForce GTX 980

Graphics Card

Dec 2010

Release Date

Sep 2014

Northern Islands

Generation

GeForce 900

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

Base Clock

1127 MHz

-

Boost Clock

1216 MHz

1250 MHz

Memory Clock

1753 MHz

Memory

2GB

Memory Size

4GB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

256bit

160.0GB/s

Bandwidth

224.4GB/s

Render Config

22

Compute Units

-

1408

Shading Units

2048

88

TMUs

128

32

ROPs

64

-

8 KB (per CU)

L1 Cache

48 KB (per SMM)

512 KB

L2 Cache

2 MB

-

Theoretical Performance

25.60 GPixel/s

Pixel Rate

77.82 GPixel/s

70.40 GTexel/s

Texture Rate

155.6 GTexel/s

-

2.253 TFLOPS

FP32 (float)

4.981 TFLOPS

563.2 GFLOPS

FP64 (double)

155.6 GFLOPS

Board Design

200W

TDP

165W

550 W

Suggested PSU

450 W

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

Outputs

1x DVI 1x HDMI 2.0 3x DisplayPort 1.4a

2x 6-pin

Power Connectors

2x 6-pin

Graphics Processor

Cayman

GPU Name

GM204

Cayman PRO (215-0807019)

GPU Variant

GM204-400-A1

TeraScale 3

Architecture

Maxwell 2.0

TSMC

Foundry

TSMC

40 nm

Process Size

28 nm

2.64 billion

Transistors

5.2 billion

389 mm²

Die Size

398 mm²

Graphics Features

11.2 (11_0)

DirectX

12 (12_1)

4.4

OpenGL

4.6

1.2

OpenCL

3.0

N/A

Vulkan

1.3

-

CUDA

5.2

5.0

Shader Model

6.4

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