ATI Radeon HD 5770 vs NVIDIA GeForce GT 640

VS

ATI Radeon HD 5770

NVIDIA GeForce GT 640

We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 5770 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 5770 's Advantages

Larger VRAM bandwidth (76.80GB/s vs 28.51GB/s)

416 additional rendering cores

NVIDIA GeForce GT 640 's Advantages

Released 2 years and 8 months late

More VRAM (2GB vs 1024GB)

Lower TDP (65W vs 108W)

Score

Benchmark

FP32 (float)

Radeon HD 5770 +96%

1.36 TFLOPS

GeForce GT 640

0.693 TFLOPS

Radeon HD 5770

VS

GeForce GT 640

Graphics Card

Oct 2009

Release Date

Jun 2012

Evergreen

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

128bit

Memory Bus

128bit

76.80GB/s

Bandwidth

28.51GB/s

Render Config

10

Compute Units

-

800

Shading Units

384

40

TMUs

32

16

ROPs

16

-

8 KB (per CU)

L1 Cache

16 KB (per SMX)

256 KB

L2 Cache

256 KB

-

Theoretical Performance

13.60 GPixel/s

Pixel Rate

7.216 GPixel/s

34.00 GTexel/s

Texture Rate

28.86 GTexel/s

-

1360 GFLOPS

FP32 (float)

692.7 GFLOPS

-

FP64 (double)

28.86 GFLOPS

Board Design

108W

TDP

65W

300 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

Power Connectors

None

Graphics Processor

Juniper

GPU Name

GK107

Juniper XT (215-0754013)

GPU Variant

GK107-300-A2

TeraScale 2

Architecture

Kepler

TSMC

Foundry

TSMC

40 nm

Process Size

28 nm

1.04 billion

Transistors

1.27 billion

166 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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