ATI Radeon HD 5950 vs NVIDIA GeForce GT 640

VS

ATI Radeon HD 5950

NVIDIA GeForce GT 640

We compared two Desktop platform GPUs: 1024MB VRAM ATI Radeon HD 5950 and 2GB VRAM GeForce GT 640 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

ATI Radeon HD 5950 's Advantages

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

1056 additional rendering cores

NVIDIA GeForce GT 640 's Advantages

More VRAM (2GB vs 1024GB)

Lower TDP (65W vs 302W)

Score

Benchmark

FP32 (float)

ATI Radeon HD 5950 +201%

2.088 TFLOPS

GeForce GT 640

0.693 TFLOPS

ATI Radeon HD 5950

VS

GeForce GT 640

Graphics Card

Unknown

Release Date

Jun 2012

Evergreen

Generation

GeForce 600

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

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

18

Compute Units

-

1440

Shading Units

384

72

TMUs

32

ROPs

16

-

8 KB (per CU)

L1 Cache

16 KB (per SMX)

512 KB

L2 Cache

256 KB

-

Theoretical Performance

23.20 GPixel/s

Pixel Rate

7.216 GPixel/s

52.20 GTexel/s

Texture Rate

28.86 GTexel/s

-

2.088 TFLOPS

FP32 (float)

692.7 GFLOPS

-

FP64 (double)

28.86 GFLOPS

Board Design

302W

TDP

65W

700 W

Suggested PSU

250 W

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

Outputs

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

1x 6-pin + 1x 8-pin

Power Connectors

None

Graphics Processor

Hemlock

GPU Name

GK107

Hemlock PRO

GPU Variant

GK107-300-A2

TeraScale 2

Architecture

Kepler

TSMC

Foundry

TSMC

40 nm

Process Size

28 nm

2.154 billion

Transistors

1.27 billion

334 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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