ATI Mobility Radeon X2500 vs NVIDIA GeForce GT 645M

VS

ATI Mobility Radeon X2500

NVIDIA GeForce GT 645M

We compared two Mobile platform GPUs: 256MB VRAM Mobility Radeon X2500 and 2GB VRAM GeForce GT 645M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GT 645M 's Advantages

Released 5 years and 4 months late

More VRAM (2GB vs 256GB)

Larger VRAM bandwidth (28.80GB/s vs 12.80GB/s)

384 additional rendering cores

Score

Mobility Radeon X2500

VS

GeForce GT 645M

Graphics Card

Jun 2007

Release Date

Oct 2012

M6x

Generation

GeForce 600M

Mobile

Type

Mobile

PCIe 1.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

400 MHz

Memory Clock

900 MHz

Memory

256MB

Memory Size

2GB

DDR2

Memory Type

DDR3

128bit

Memory Bus

128bit

12.80GB/s

Bandwidth

28.80GB/s

Render Config

-

Shading Units

384

4

TMUs

32

4

ROPs

16

-

L1 Cache

16 KB (per SMX)

-

L2 Cache

256 KB

-

Theoretical Performance

1.840 GPixel/s

Pixel Rate

5.672 GPixel/s

1.840 GTexel/s

Texture Rate

22.69 GTexel/s

-

FP32 (float)

544.5 GFLOPS

-

FP64 (double)

22.69 GFLOPS

Board Design

Unknown

TDP

32W

-

Portable Device Dependent

Outputs

No outputs

-

Graphics Processor

M66

GPU Name

GK107

-

GPU Variant

N13P-GS

Ultra-Threaded SE

Architecture

Kepler

TSMC

Foundry

TSMC

90 nm

Process Size

28 nm

0.157 billion

Transistors

1.27 billion

150 mm²

Die Size

118 mm²

Graphics Features

9.0c (9_3)

DirectX

12 (11_0)

2.1

OpenGL

4.6

N/A

OpenCL

3.0

N/A

Vulkan

1.1

-

CUDA

3.0

Shader Model

5.1

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