AMD Radeon HD 8670A vs NVIDIA GeForce GT 645M

VS

AMD Radeon HD 8670A

NVIDIA GeForce GT 645M

We compared two Mobile platform GPUs: 1024MB VRAM Radeon HD 8670A 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

More VRAM (2GB vs 1024GB)

Larger VRAM bandwidth (28.80GB/s vs 16.00GB/s)

Lower TDP (32W vs 45W)

Score

Benchmark

FP32 (float)

Radeon HD 8670A

0.461 TFLOPS

GeForce GT 645M +18%

0.544 TFLOPS

Radeon HD 8670A

VS

GeForce GT 645M

Graphics Card

Feb 2013

Release Date

Oct 2012

All-In-One

Generation

GeForce 600M

Mobile

Type

Mobile

MXM-A (3.0)

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

1000 MHz

Memory Clock

900 MHz

Memory

1024MB

Memory Size

2GB

DDR3

Memory Type

DDR3

64bit

Memory Bus

128bit

16.00GB/s

Bandwidth

28.80GB/s

Render Config

6

Compute Units

-

384

Shading Units

384

24

TMUs

32

8

ROPs

16

-

16 KB (per CU)

L1 Cache

16 KB (per SMX)

128 KB

L2 Cache

256 KB

-

Theoretical Performance

4.800 GPixel/s

Pixel Rate

5.672 GPixel/s

14.40 GTexel/s

Texture Rate

22.69 GTexel/s

-

460.8 GFLOPS

FP32 (float)

544.5 GFLOPS

28.80 GFLOPS

FP64 (double)

22.69 GFLOPS

Board Design

45W

TDP

32W

-

No outputs

Outputs

No outputs

-

Graphics Processor

Mars

GPU Name

GK107

Mars XT

GPU Variant

N13P-GS

GCN 1.0

Architecture

Kepler

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

0.95 billion

Transistors

1.27 billion

77 mm²

Die Size

118 mm²

Graphics Features

12 (11_1)

DirectX

12 (11_0)

4.6

OpenGL

4.6

1.2

OpenCL

3.0

1.2

Vulkan

1.1

-

CUDA

3.0

5.1

Shader Model

5.1

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