NVIDIA GeForce GT 640 vs ATI Radeon X1550 PCI

VS

NVIDIA GeForce GT 640

ATI Radeon X1550 PCI

We compared two Desktop platform GPUs: 2GB VRAM GeForce GT 640 and 256MB VRAM Radeon X1550 PCI to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GT 640 's Advantages

Released 5 years and 5 months late

More VRAM (2GB vs 256GB)

Larger VRAM bandwidth (28.51GB/s vs 4.256GB/s)

384 additional rendering cores

ATI Radeon X1550 PCI 's Advantages

Lower TDP (27W vs 65W)

Score

GeForce GT 640

VS

Radeon X1550 PCI

Graphics Card

Jun 2012

Release Date

Jan 2007

GeForce 600

Generation

Radeon R500 PCIe

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 1.0 x16

Clock Speeds

-

891 MHz

Memory Clock

266 MHz

Memory

2GB

Memory Size

256MB

DDR3

Memory Type

DDR2

128bit

Memory Bus

64bit

28.51GB/s

Bandwidth

4.256GB/s

Render Config

-

384

Shading Units

-

32

TMUs

4

16

ROPs

4

-

16 KB (per SMX)

L1 Cache

-

256 KB

L2 Cache

-

Theoretical Performance

7.216 GPixel/s

Pixel Rate

1.808 GPixel/s

28.86 GTexel/s

Texture Rate

1.808 GTexel/s

-

692.7 GFLOPS

FP32 (float)

-

28.86 GFLOPS

FP64 (double)

-

Board Design

65W

TDP

27W

250 W

Suggested PSU

200 W

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

Outputs

1x DVI 1x VGA 1x S-Video

None

Power Connectors

None

Graphics Processor

GK107

GPU Name

RV516

GK107-300-A2

GPU Variant

-

Kepler

Architecture

R500

TSMC

Foundry

UMC

28 nm

Process Size

80 nm

1.27 billion

Transistors

0.107 billion

118 mm²

Die Size

100 mm²

Graphics Features

12 (11_0)

DirectX

9.0c (9_3)

4.6

OpenGL

2.1

3.0

OpenCL

N/A

1.1

Vulkan

N/A

3.0

CUDA

-

5.1

Shader Model

3.0

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