NVIDIA GeForce GT 645M vs ATI Mobility Radeon HD 2600 XT Mac Edition

VS

NVIDIA GeForce GT 645M ATI Mobility Radeon HD 2600 XT Mac Edition

We compared two Mobile platform GPUs: 2GB VRAM GeForce GT 645M and 256MB VRAM Mobility Radeon HD 2600 XT Mac Edition 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 3 months late

Larger VRAM bandwidth (28.80GB/s vs 21.92GB/s)

264 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce GT 645M +277%

0.544 TFLOPS

Mobility Radeon HD 2600 XT Mac Edition

0.144 TFLOPS

GeForce GT 645M

VS

Mobility Radeon HD 2600 XT Mac Edition

Graphics Card

Oct 2012

Release Date

Jul 2007

GeForce 600M

Generation

M7x

Mobile

Type

Mobile

PCIe 3.0 x16

Bus Interface

MXM-II

Clock Speeds

-

Base Clock

-

Boost Clock

-

900 MHz

Memory Clock

685 MHz

Memory

2GB

Memory Size

256MB

DDR3

Memory Type

GDDR3

128bit

Memory Bus

128bit

28.80GB/s

Bandwidth

21.92GB/s

Render Config

-

SM Count

-

Compute Units

3

384

Shading Units

120

32

TMUs

8

16

ROPs

4

-

Tensor Cores

-

RT Cores

-

16 KB (per SMX)

L1 Cache

-

256 KB

L2 Cache

64 KB

Theoretical Performance

5.672 GPixel/s

Pixel Rate

2.400 GPixel/s

22.69 GTexel/s

Texture Rate

4.800 GTexel/s

-

FP16 (half)

-

544.5 GFLOPS

FP32 (float)

144.0 GFLOPS

22.69 GFLOPS

FP64 (double)

-

Graphics Processor

GK107

GPU Name

M76

N13P-GS

GPU Variant

M76 XT-M (216XJBKA13FG)

Kepler

Architecture

TeraScale

TSMC

Foundry

TSMC

28 nm

Process Size

65 nm

1.27 billion

Transistors

0.39 billion

118 mm²

Die Size

153 mm²

Board Design

32W

TDP

Unknown

-

Suggested PSU

-

No outputs

Outputs

Portable Device Dependent

-

Power Connectors

-

Graphics Features

12 (11_0)

DirectX

10.0 (10_0)

4.6

OpenGL

3.3

3.0

OpenCL

N/A

1.1

Vulkan

N/A

3.0

CUDA

-

5.1

Shader Model

4.0

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