NVIDIA GeForce GTX 680 vs AMD Radeon HD 6950

VS

NVIDIA GeForce GTX 680

AMD Radeon HD 6950

We compared two Desktop platform GPUs: 2GB VRAM GeForce GTX 680 and 2GB VRAM Radeon HD 6950 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GTX 680 's Advantages

Released 1 years and 3 months late

Boost Clock1058MHz

Larger VRAM bandwidth (192.3GB/s vs 160.0GB/s)

128 additional rendering cores

Lower TDP (195W vs 200W)

Score

Benchmark

FP32 (float)

GeForce GTX 680 +44%

3.25 TFLOPS

Radeon HD 6950

2.253 TFLOPS

GeForce GTX 680

VS

Radeon HD 6950

Graphics Card

Mar 2012

Release Date

Dec 2010

GeForce 600

Generation

Northern Islands

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

1006 MHz

Base Clock

-

1058 MHz

Boost Clock

-

1502 MHz

Memory Clock

1250 MHz

Memory

2GB

Memory Size

2GB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

256bit

192.3GB/s

Bandwidth

160.0GB/s

Render Config

-

Compute Units

22

-

1536

Shading Units

1408

128

TMUs

88

32

ROPs

32

-

16 KB (per SMX)

L1 Cache

8 KB (per CU)

512 KB

L2 Cache

512 KB

-

Theoretical Performance

33.86 GPixel/s

Pixel Rate

25.60 GPixel/s

135.4 GTexel/s

Texture Rate

70.40 GTexel/s

-

3.250 TFLOPS

FP32 (float)

2.253 TFLOPS

135.4 GFLOPS

FP64 (double)

563.2 GFLOPS

Board Design

195W

TDP

200W

450 W

Suggested PSU

550 W

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

Outputs

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

2x 6-pin

Power Connectors

2x 6-pin

Graphics Processor

GK104

GPU Name

Cayman

GK104-400-A2

GPU Variant

Cayman PRO (215-0807019)

Kepler

Architecture

TeraScale 3

TSMC

Foundry

TSMC

28 nm

Process Size

40 nm

3.54 billion

Transistors

2.64 billion

294 mm²

Die Size

389 mm²

Graphics Features

12 (11_0)

DirectX

11.2 (11_0)

4.6

OpenGL

4.4

3.0

OpenCL

1.2

1.1

Vulkan

N/A

3.0

CUDA

-

5.1

Shader Model

5.0

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