AMD Radeon HD 6970 vs NVIDIA GeForce GT 620

VS

AMD Radeon HD 6970

NVIDIA GeForce GT 620

We compared two Desktop platform GPUs: 2GB VRAM Radeon HD 6970 and 1024MB VRAM GeForce GT 620 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 6970 's Advantages

More VRAM (2GB vs 1024GB)

Larger VRAM bandwidth (176.0GB/s vs 14.40GB/s)

1440 additional rendering cores

NVIDIA GeForce GT 620 's Advantages

Released 1 years and 5 months late

Lower TDP (49W vs 250W)

Score

Benchmark

FP32 (float)

Radeon HD 6970 +904%

2.703 TFLOPS

GeForce GT 620

0.269 TFLOPS

Radeon HD 6970

VS

GeForce GT 620

Graphics Card

Dec 2010

Release Date

May 2012

Northern Islands

Generation

GeForce 600

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

1375 MHz

Memory Clock

900 MHz

Memory

2GB

Memory Size

1024MB

GDDR5

Memory Type

DDR3

256bit

Memory Bus

64bit

176.0GB/s

Bandwidth

14.40GB/s

Render Config

24

Compute Units

-

SM Count

2

1536

Shading Units

96

TMUs

16

32

ROPs

4

-

8 KB (per CU)

L1 Cache

64 KB (per SM)

512 KB

L2 Cache

128 KB

-

Theoretical Performance

28.16 GPixel/s

Pixel Rate

2.800 GPixel/s

84.48 GTexel/s

Texture Rate

11.20 GTexel/s

-

2.703 TFLOPS

FP32 (float)

268.8 GFLOPS

675.8 GFLOPS

FP64 (double)

22.40 GFLOPS

Board Design

250W

TDP

49W

600 W

Suggested PSU

200 W

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

Outputs

1x DVI 1x HDMI 1.3a 1x VGA

1x 6-pin + 1x 8-pin

Power Connectors

None

Graphics Processor

Cayman

GPU Name

GF108

Cayman XT (215-0807007)

GPU Variant

GF108-100-KB-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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