AMD Radeon HD 6930 vs NVIDIA GeForce GT 640 OEM

VS

AMD Radeon HD 6930

NVIDIA GeForce GT 640 OEM

We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 6930 and 2GB VRAM GeForce GT 640 OEM to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 6930 's Advantages

Larger VRAM bandwidth (153.6GB/s vs 28.51GB/s)

896 additional rendering cores

NVIDIA GeForce GT 640 OEM 's Advantages

More VRAM (2GB vs 1024GB)

Lower TDP (50W vs 186W)

Score

Benchmark

FP32 (float)

Radeon HD 6930 +213%

1.92 TFLOPS

GeForce GT 640 OEM

0.612 TFLOPS

Radeon HD 6930

VS

GeForce GT 640 OEM

Graphics Card

Dec 2011

Release Date

Apr 2012

Northern Islands

Generation

GeForce 600

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

1200 MHz

Memory Clock

891 MHz

Memory

1024MB

Memory Size

2GB

GDDR5

Memory Type

DDR3

256bit

Memory Bus

128bit

153.6GB/s

Bandwidth

28.51GB/s

Render Config

20

Compute Units

-

1280

Shading Units

384

80

TMUs

32

ROPs

16

-

8 KB (per CU)

L1 Cache

16 KB (per SMX)

512 KB

L2 Cache

256 KB

-

Theoretical Performance

24.00 GPixel/s

Pixel Rate

6.376 GPixel/s

60.00 GTexel/s

Texture Rate

25.50 GTexel/s

-

1.920 TFLOPS

FP32 (float)

612.1 GFLOPS

480.0 GFLOPS

FP64 (double)

25.50 GFLOPS

Board Design

186W

TDP

50W

450 W

Suggested PSU

250 W

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

Outputs

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

2x 6-pin

Power Connectors

None

Graphics Processor

Cayman

GPU Name

GK107

Cayman CE (215-0807105)

GPU Variant

GK107-320-A2

TeraScale 3

Architecture

Kepler

TSMC

Foundry

TSMC

40 nm

Process Size

28 nm

2.64 billion

Transistors

1.27 billion

389 mm²

Die Size

118 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

3.0

5.0

Shader Model

5.1

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