NVIDIA GeForce GT 640 OEM Rebrand vs ATI Radeon HD 5770 X2

VS

NVIDIA GeForce GT 640 OEM Rebrand

ATI Radeon HD 5770 X2

We compared two Desktop platform GPUs: 1536MB VRAM GeForce GT 640 OEM Rebrand and 1024MB VRAM Radeon HD 5770 X2 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GT 640 OEM Rebrand 's Advantages

Released 1 years and 6 months late

More VRAM (1536GB vs 1024GB)

ATI Radeon HD 5770 X2 's Advantages

Larger VRAM bandwidth (76.80GB/s vs 38.40GB/s)

656 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce GT 640 OEM Rebrand

0.415 TFLOPS

Radeon HD 5770 X2 +227%

1.36 TFLOPS

GeForce GT 640 OEM Rebrand

VS

Radeon HD 5770 X2

Graphics Card

Apr 2012

Release Date

Oct 2010

GeForce 600

Generation

Evergreen

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

800 MHz

Memory Clock

1200 MHz

Memory

1536MB

Memory Size

1024MB

DDR3

Memory Type

GDDR5

192bit

Memory Bus

128bit

38.40GB/s

Bandwidth

76.80GB/s

Render Config

-

Compute Units

10

3

SM Count

-

144

Shading Units

800

24

TMUs

40

24

ROPs

16

-

64 KB (per SM)

L1 Cache

8 KB (per CU)

384 KB

L2 Cache

256 KB

-

Theoretical Performance

4.320 GPixel/s

Pixel Rate

13.60 GPixel/s

17.28 GTexel/s

Texture Rate

34.00 GTexel/s

-

414.7 GFLOPS

FP32 (float)

1360 GFLOPS

34.56 GFLOPS

FP64 (double)

-

Board Design

75W

TDP

Unknown

250 W

Suggested PSU

200 W

2x DVI 1x mini-HDMI 1.3a

Outputs

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

None

Power Connectors

-

Graphics Processor

GF116

GPU Name

Juniper

GF116-150-A1

GPU Variant

Juniper XT (215-0754013)

Fermi 2.0

Architecture

TeraScale 2

TSMC

Foundry

TSMC

40 nm

Process Size

40 nm

1.17 billion

Transistors

1.04 billion

238 mm²

Die Size

166 mm²

Graphics Features

12 (11_0)

DirectX

11.2 (11_0)

4.6

OpenGL

4.4

1.1

OpenCL

1.2

N/A

Vulkan

N/A

2.1

CUDA

-

5.1

Shader Model

5.0

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