NVIDIA GeForce GT 645 OEM vs AMD Radeon HD 8490 OEM

VS

NVIDIA GeForce GT 645 OEM

AMD Radeon HD 8490 OEM

We compared two Desktop platform GPUs: 1024MB VRAM GeForce GT 645 OEM and 1024MB VRAM Radeon HD 8490 OEM to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GT 645 OEM 's Advantages

Larger VRAM bandwidth (91.87GB/s vs 14.40GB/s)

128 additional rendering cores

AMD Radeon HD 8490 OEM 's Advantages

Released 1 years and 3 months late

Lower TDP (35W vs 102W)

Score

Benchmark

FP32 (float)

GeForce GT 645 OEM +219%

0.894 TFLOPS

Radeon HD 8490 OEM

0.28 TFLOPS

GeForce GT 645 OEM

VS

Radeon HD 8490 OEM

Graphics Card

Apr 2012

Release Date

Jul 2013

GeForce 600

Generation

Sea Islands

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

957 MHz

Memory Clock

900 MHz

Memory

1024MB

Memory Size

1024MB

GDDR5

Memory Type

DDR3

192bit

Memory Bus

64bit

91.87GB/s

Bandwidth

14.40GB/s

Render Config

-

Compute Units

2

6

SM Count

-

288

Shading Units

160

48

TMUs

8

24

ROPs

4

-

64 KB (per SM)

L1 Cache

8 KB (per CU)

384 KB

L2 Cache

128 KB

-

Theoretical Performance

9.312 GPixel/s

Pixel Rate

3.500 GPixel/s

37.25 GTexel/s

Texture Rate

7.000 GTexel/s

-

894.0 GFLOPS

FP32 (float)

280.0 GFLOPS

74.50 GFLOPS

FP64 (double)

-

Board Design

102W

TDP

35W

300 W

Suggested PSU

200 W

2x DVI 1x mini-HDMI 1.3a

Outputs

1x DVI 1x DisplayPort 1.1

-

Power Connectors

None

Graphics Processor

GF114

GPU Name

Caicos

-

GPU Variant

Caicos XTX

Fermi 2.0

Architecture

TeraScale 2

TSMC

Foundry

TSMC

40 nm

Process Size

40 nm

1.95 billion

Transistors

0.37 billion

332 mm²

Die Size

67 mm²

Graphics Features

12 (11_0)

DirectX

11.2 (11_0)

4.6

OpenGL

4.4

1.1

OpenCL

1.2

N/A

Vulkan

N/A

2.1

CUDA

-

5.1

Shader Model

5.0

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