NVIDIA GeForce GT 645 OEM vs ATI Radeon HD 4860

VS

NVIDIA GeForce GT 645 OEM

ATI Radeon HD 4860

We compared two Desktop platform GPUs: 1024MB VRAM GeForce GT 645 OEM and 512MB VRAM Radeon HD 4860 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GT 645 OEM 's Advantages

Released 2 years and 7 months late

More VRAM (1024GB vs 512GB)

Lower TDP (102W vs 130W)

ATI Radeon HD 4860 's Advantages

Larger VRAM bandwidth (96.00GB/s vs 91.87GB/s)

352 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce GT 645 OEM

0.894 TFLOPS

Radeon HD 4860

0.896 TFLOPS

GeForce GT 645 OEM

VS

Radeon HD 4860

Graphics Card

Apr 2012

Release Date

Sep 2009

GeForce 600

Generation

Radeon R700

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

957 MHz

Memory Clock

750 MHz

Memory

1024MB

Memory Size

512MB

GDDR5

Memory Type

GDDR5

192bit

Memory Bus

256bit

91.87GB/s

Bandwidth

96.00GB/s

Render Config

-

Compute Units

8

6

SM Count

-

288

Shading Units

640

48

TMUs

32

24

ROPs

16

-

64 KB (per SM)

L1 Cache

16 KB (per CU)

384 KB

L2 Cache

256 KB

-

Theoretical Performance

9.312 GPixel/s

Pixel Rate

11.20 GPixel/s

37.25 GTexel/s

Texture Rate

22.40 GTexel/s

-

894.0 GFLOPS

FP32 (float)

896.0 GFLOPS

74.50 GFLOPS

FP64 (double)

179.2 GFLOPS

Board Design

102W

TDP

130W

300 W

Suggested PSU

300 W

2x DVI 1x mini-HDMI 1.3a

Outputs

2x DVI 1x S-Video

-

Power Connectors

2x 6-pin

Graphics Processor

GF114

GPU Name

RV790

-

GPU Variant

RV790 GT

Fermi 2.0

Architecture

TeraScale

TSMC

Foundry

TSMC

40 nm

Process Size

55 nm

1.95 billion

Transistors

0.959 billion

332 mm²

Die Size

282 mm²

Graphics Features

12 (11_0)

DirectX

10.1 (10_1)

4.6

OpenGL

3.3

1.1

OpenCL

1.1

N/A

Vulkan

N/A

2.1

CUDA

-

5.1

Shader Model

4.1

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