AMD Radeon HD 6970 X2 vs NVIDIA GeForce GT 640 Rev. 2

VS

AMD Radeon HD 6970 X2

NVIDIA GeForce GT 640 Rev. 2

We compared two Desktop platform GPUs: 2GB VRAM Radeon HD 6970 X2 and 1024MB VRAM GeForce GT 640 Rev. 2 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 6970 X2 's Advantages

More VRAM (2GB vs 1024GB)

Larger VRAM bandwidth (176.0GB/s vs 40.06GB/s)

1152 additional rendering cores

NVIDIA GeForce GT 640 Rev. 2 's Advantages

Lower TDP (49W vs 375W)

Score

Benchmark

FP32 (float)

Radeon HD 6970 X2 +236%

2.703 TFLOPS

GeForce GT 640 Rev. 2

0.803 TFLOPS

Radeon HD 6970 X2

VS

GeForce GT 640 Rev. 2

Graphics Card

Unknown

Release Date

May 2013

Northern Islands

Generation

GeForce 600

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x8

Clock Speeds

-

1375 MHz

Memory Clock

1252 MHz

Memory

2GB

Memory Size

1024MB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

64bit

176.0GB/s

Bandwidth

40.06GB/s

Render Config

24

Compute Units

-

1536

Shading Units

384

96

TMUs

32

ROPs

8

-

8 KB (per CU)

L1 Cache

16 KB (per SMX)

512 KB

L2 Cache

512 KB

-

Theoretical Performance

28.16 GPixel/s

Pixel Rate

8.368 GPixel/s

84.48 GTexel/s

Texture Rate

33.47 GTexel/s

-

2.703 TFLOPS

FP32 (float)

803.3 GFLOPS

-

FP64 (double)

33.47 GFLOPS

Board Design

375W

TDP

49W

750 W

Suggested PSU

200 W

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

Outputs

1x DVI 1x HDMI 1.4a 1x VGA

3x 8-pin

Power Connectors

None

Graphics Processor

Antilles

GPU Name

GK208

Antilles XT (215-0807027)

GPU Variant

GK208-400-A1

TeraScale 3

Architecture

Kepler 2.0

TSMC

Foundry

TSMC

40 nm

Process Size

28 nm

2.64 billion

Transistors

1.02 billion

389 mm²

Die Size

87 mm²

Graphics Features

11.2 (11_0)

DirectX

12 (11_0)

4.4

OpenGL

4.6

1.2

OpenCL

3.0

N/A

Vulkan

1.1

-

CUDA

3.5

5.0

Shader Model

5.1

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