AMD Radeon HD 6850 vs NVIDIA GeForce GT 640

VS

AMD Radeon HD 6850 NVIDIA GeForce GT 640

We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 6850 and 2GB VRAM GeForce GT 640 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 6850 's Advantages

Larger VRAM bandwidth (128.0GB/s vs 28.51GB/s)

576 additional rendering cores

NVIDIA GeForce GT 640 's Advantages

Released 1 years and 8 months late

More VRAM (2GB vs 1GB)

Lower TDP (65W vs 127W)

Score

Benchmark

FP32 (float)

Radeon HD 6850 +114%

1.488 TFLOPS

GeForce GT 640

0.693 TFLOPS

Radeon HD 6850

VS

GeForce GT 640

Graphics Card

Oct 2010

Release Date

Jun 2012

Northern Islands

Generation

GeForce 600

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

Base Clock

-

Boost Clock

-

1000 MHz

Memory Clock

891 MHz

Memory

1024MB

Memory Size

2GB

GDDR5

Memory Type

DDR3

256bit

Memory Bus

128bit

128.0GB/s

Bandwidth

28.51GB/s

Render Config

-

SM Count

-

12

Compute Units

-

960

Shading Units

384

48

TMUs

32

ROPs

16

-

Tensor Cores

-

RT Cores

-

8 KB (per CU)

L1 Cache

16 KB (per SMX)

512 KB

L2 Cache

256 KB

Theoretical Performance

24.80 GPixel/s

Pixel Rate

7.216 GPixel/s

37.20 GTexel/s

Texture Rate

28.86 GTexel/s

-

FP16 (half)

-

1488 GFLOPS

FP32 (float)

692.7 GFLOPS

-

FP64 (double)

28.86 GFLOPS

Graphics Processor

Barts

GPU Name

GK107

Barts PRO (215-0798006)

GPU Variant

GK107-300-A2

TeraScale 2

Architecture

Kepler

TSMC

Foundry

TSMC

40 nm

Process Size

28 nm

1.7 billion

Transistors

1.27 billion

255 mm²

Die Size

118 mm²

Board Design

127W

TDP

65W

300 W

Suggested PSU

250 W

2x DVI 1x HDMI 1.3a 2x mini-DisplayPort 1.1

Outputs

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

1x 6-pin

Power Connectors

None

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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