ATI Radeon HD 4450 vs NVIDIA GeForce GT 645 OEM

VS

ATI Radeon HD 4450

NVIDIA GeForce GT 645 OEM

We compared two Desktop platform GPUs: 512MB VRAM Radeon HD 4450 and 1024MB VRAM GeForce GT 645 OEM to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

ATI Radeon HD 4450 's Advantages

Lower TDP (25W vs 102W)

NVIDIA GeForce GT 645 OEM 's Advantages

More VRAM (1024GB vs 512GB)

Larger VRAM bandwidth (91.87GB/s vs 6.400GB/s)

208 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 4450

0.096 TFLOPS

GeForce GT 645 OEM +831%

0.894 TFLOPS

Radeon HD 4450

VS

GeForce GT 645 OEM

Graphics Card

Nov 2011

Release Date

Apr 2012

Radeon R700

Generation

GeForce 600

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

400 MHz

Memory Clock

957 MHz

Memory

512MB

Memory Size

1024MB

DDR2

Memory Type

GDDR5

64bit

Memory Bus

192bit

6.400GB/s

Bandwidth

91.87GB/s

Render Config

1

Compute Units

-

SM Count

6

80

Shading Units

288

8

TMUs

48

4

ROPs

24

-

16 KB (per CU)

L1 Cache

64 KB (per SM)

64 KB

L2 Cache

384 KB

-

Theoretical Performance

2.400 GPixel/s

Pixel Rate

9.312 GPixel/s

4.800 GTexel/s

Texture Rate

37.25 GTexel/s

-

96.00 GFLOPS

FP32 (float)

894.0 GFLOPS

-

FP64 (double)

74.50 GFLOPS

Board Design

25W

TDP

102W

200 W

Suggested PSU

300 W

1x DVI 1x HDMI 1.3a 1x DisplayPort 1.0

Outputs

2x DVI 1x mini-HDMI 1.3a

None

Power Connectors

-

Graphics Processor

RV710

GPU Name

GF114

RV710 (215-0725016)

GPU Variant

-

TeraScale

Architecture

Fermi 2.0

TSMC

Foundry

TSMC

55 nm

Process Size

40 nm

0.242 billion

Transistors

1.95 billion

73 mm²

Die Size

332 mm²

Graphics Features

10.1 (10_1)

DirectX

12 (11_0)

3.3

OpenGL

4.6

1.1

OpenCL

1.1

N/A

Vulkan

N/A

-

CUDA

2.1

4.1

Shader Model

5.1

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