AMD Radeon HD 6950 vs NVIDIA GeForce GT 420 OEM

VS

AMD Radeon HD 6950

NVIDIA GeForce GT 420 OEM

We compared two Desktop platform GPUs: 2GB VRAM Radeon HD 6950 and 1024MB VRAM GeForce GT 420 OEM to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 6950 's Advantages

More VRAM (2GB vs 1024GB)

Larger VRAM bandwidth (160.0GB/s vs 28.80GB/s)

1360 additional rendering cores

NVIDIA GeForce GT 420 OEM 's Advantages

Lower TDP (50W vs 200W)

Score

Benchmark

FP32 (float)

Radeon HD 6950 +1581%

2.253 TFLOPS

GeForce GT 420 OEM

0.134 TFLOPS

Radeon HD 6950

VS

GeForce GT 420 OEM

Graphics Card

Dec 2010

Release Date

Sep 2010

Northern Islands

Generation

GeForce 400

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

1250 MHz

Memory Clock

900 MHz

Memory

2GB

Memory Size

1024MB

GDDR5

Memory Type

DDR3

256bit

Memory Bus

128bit

160.0GB/s

Bandwidth

28.80GB/s

Render Config

22

Compute Units

-

SM Count

1

1408

Shading Units

48

88

TMUs

4

32

ROPs

4

-

8 KB (per CU)

L1 Cache

64 KB (per SM)

512 KB

L2 Cache

256 KB

-

Theoretical Performance

25.60 GPixel/s

Pixel Rate

1.400 GPixel/s

70.40 GTexel/s

Texture Rate

2.800 GTexel/s

-

2.253 TFLOPS

FP32 (float)

134.4 GFLOPS

563.2 GFLOPS

FP64 (double)

11.20 GFLOPS

Board Design

200W

TDP

50W

550 W

Suggested PSU

250 W

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

Outputs

1x DVI 1x HDMI 1.3a 1x VGA

2x 6-pin

Power Connectors

None

Graphics Processor

Cayman

GPU Name

GF108

Cayman PRO (215-0807019)

GPU Variant

GF108-200-A1

TeraScale 3

Architecture

Fermi

TSMC

Foundry

TSMC

40 nm

Process Size

40 nm

2.64 billion

Transistors

0.585 billion

389 mm²

Die Size

116 mm²

Graphics Features

11.2 (11_0)

DirectX

12 (11_0)

4.4

OpenGL

4.6

1.2

OpenCL

1.1

N/A

Vulkan

N/A

-

CUDA

2.1

5.0

Shader Model

5.1

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