ATI Mobility Radeon HD 2700 vs NVIDIA GeForce GT 645M

VS

ATI Mobility Radeon HD 2700

NVIDIA GeForce GT 645M

We compared two Mobile platform GPUs: 256MB VRAM Mobility Radeon HD 2700 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 4 years and 10 months late

More VRAM (2GB vs 256GB)

Larger VRAM bandwidth (28.80GB/s vs 22.40GB/s)

264 additional rendering cores

Lower TDP (32W vs 35W)

Score

Benchmark

FP32 (float)

Mobility Radeon HD 2700

0.168 TFLOPS

GeForce GT 645M +223%

0.544 TFLOPS

Mobility Radeon HD 2700

VS

GeForce GT 645M

Graphics Card

Dec 2007

Release Date

Oct 2012

M7x

Generation

GeForce 600M

Mobile

Type

Mobile

MXM-II

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

700 MHz

Memory Clock

900 MHz

Memory

256MB

Memory Size

2GB

GDDR3

Memory Type

DDR3

128bit

Memory Bus

128bit

22.40GB/s

Bandwidth

28.80GB/s

Render Config

3

Compute Units

-

120

Shading Units

384

8

TMUs

32

4

ROPs

16

-

L1 Cache

16 KB (per SMX)

64 KB

L2 Cache

256 KB

-

Theoretical Performance

2.800 GPixel/s

Pixel Rate

5.672 GPixel/s

5.600 GTexel/s

Texture Rate

22.69 GTexel/s

-

168.0 GFLOPS

FP32 (float)

544.5 GFLOPS

-

FP64 (double)

22.69 GFLOPS

Board Design

35W

TDP

32W

-

No outputs

Outputs

No outputs

-

Graphics Processor

M76

GPU Name

GK107

-

GPU Variant

N13P-GS

TeraScale

Architecture

Kepler

TSMC

Foundry

TSMC

65 nm

Process Size

28 nm

0.39 billion

Transistors

1.27 billion

153 mm²

Die Size

118 mm²

Graphics Features

10.0 (10_0)

DirectX

12 (11_0)

3.3

OpenGL

4.6

N/A

OpenCL

3.0

N/A

Vulkan

1.1

-

CUDA

3.0

4.0

Shader Model

5.1

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