ATI Radeon HD 4450 vs NVIDIA GeForce GT 620

VS

ATI Radeon HD 4450

NVIDIA GeForce GT 620

We compared two Desktop platform GPUs: 512MB VRAM Radeon HD 4450 and 1024MB VRAM GeForce GT 620 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 49W)

NVIDIA GeForce GT 620 's Advantages

Released 6 months late

More VRAM (1024GB vs 512GB)

Larger VRAM bandwidth (14.40GB/s vs 6.400GB/s)

16 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 4450

0.096 TFLOPS

GeForce GT 620 +180%

0.269 TFLOPS

Radeon HD 4450

VS

GeForce GT 620

Graphics Card

Nov 2011

Release Date

May 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

900 MHz

Memory

512MB

Memory Size

1024MB

DDR2

Memory Type

DDR3

64bit

Memory Bus

64bit

6.400GB/s

Bandwidth

14.40GB/s

Render Config

1

Compute Units

-

SM Count

2

80

Shading Units

96

8

TMUs

16

4

ROPs

4

-

16 KB (per CU)

L1 Cache

64 KB (per SM)

64 KB

L2 Cache

128 KB

-

Theoretical Performance

2.400 GPixel/s

Pixel Rate

2.800 GPixel/s

4.800 GTexel/s

Texture Rate

11.20 GTexel/s

-

96.00 GFLOPS

FP32 (float)

268.8 GFLOPS

-

FP64 (double)

22.40 GFLOPS

Board Design

25W

TDP

49W

200 W

Suggested PSU

200 W

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

Outputs

1x DVI 1x HDMI 1.3a 1x VGA

None

Power Connectors

None

Graphics Processor

RV710

GPU Name

GF108

RV710 (215-0725016)

GPU Variant

GF108-100-KB-A1

TeraScale

Architecture

Fermi

TSMC

Foundry

TSMC

55 nm

Process Size

40 nm

0.242 billion

Transistors

0.585 billion

73 mm²

Die Size

116 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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