ATI Radeon HD 4670 X2 vs NVIDIA GeForce GTX 645 OEM

VS

ATI Radeon HD 4670 X2

NVIDIA GeForce GTX 645 OEM

We compared two Desktop platform GPUs: 512MB VRAM Radeon HD 4670 X2 and 1024MB VRAM GeForce GTX 645 OEM to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GTX 645 OEM 's Advantages

Released 4 years and 7 months late

More VRAM (1024GB vs 512GB)

Larger VRAM bandwidth (64.00GB/s vs 22.40GB/s)

256 additional rendering cores

Lower TDP (65W vs 118W)

Score

Benchmark

FP32 (float)

Radeon HD 4670 X2

0.48 TFLOPS

GeForce GTX 645 OEM +97%

0.949 TFLOPS

Radeon HD 4670 X2

VS

GeForce GTX 645 OEM

Graphics Card

Sep 2008

Release Date

Apr 2013

Radeon R700

Generation

GeForce 600

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

700 MHz

Memory Clock

1000 MHz

Memory

512MB

Memory Size

1024MB

GDDR3

Memory Type

GDDR5

128bit

Memory Bus

128bit

22.40GB/s

Bandwidth

64.00GB/s

Render Config

4

Compute Units

-

320

Shading Units

576

32

TMUs

48

8

ROPs

16

-

16 KB (per CU)

L1 Cache

16 KB (per SMX)

128 KB

L2 Cache

256 KB

-

Theoretical Performance

6.000 GPixel/s

Pixel Rate

9.888 GPixel/s

24.00 GTexel/s

Texture Rate

39.55 GTexel/s

-

480.0 GFLOPS

FP32 (float)

949.2 GFLOPS

-

FP64 (double)

39.55 GFLOPS

Board Design

118W

TDP

65W

300 W

Suggested PSU

250 W

4x DVI

Outputs

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

1x 6-pin

Power Connectors

None

Graphics Processor

RV730

GPU Name

GK106

RV730 XT (215-0719047)

GPU Variant

GK106-200-A1

TeraScale

Architecture

Kepler

TSMC

Foundry

TSMC

55 nm

Process Size

28 nm

0.514 billion

Transistors

2.54 billion

146 mm²

Die Size

221 mm²

Graphics Features

10.1 (10_1)

DirectX

12 (11_0)

3.3

OpenGL

4.6

1.1

OpenCL

3.0

N/A

Vulkan

1.1

-

CUDA

3.0

4.1

Shader Model

5.1

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