NVIDIA GeForce GTX 490 vs NVIDIA GeForce GTX 645 OEM

VS

NVIDIA GeForce GTX 490

NVIDIA GeForce GTX 645 OEM

We compared two Desktop platform GPUs: 1536MB VRAM GeForce GTX 490 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 490 's Advantages

More VRAM (1536GB vs 1024GB)

Larger VRAM bandwidth (164.0GB/s vs 64.00GB/s)

NVIDIA GeForce GTX 645 OEM 's Advantages

96 additional rendering cores

Lower TDP (65W vs 365W)

Score

Benchmark

FP32 (float)

GeForce GTX 490 +22%

1.166 TFLOPS

GeForce GTX 645 OEM

0.949 TFLOPS

GeForce GTX 490

VS

GeForce GTX 645 OEM

Graphics Card

Unknown

Release Date

Apr 2013

GeForce 400

Generation

GeForce 600

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

854 MHz

Memory Clock

1000 MHz

Memory

1536MB

Memory Size

1024MB

GDDR5

Memory Type

GDDR5

384bit

Memory Bus

128bit

164.0GB/s

Bandwidth

64.00GB/s

Render Config

-

15

SM Count

-

480

Shading Units

576

60

TMUs

48

ROPs

16

-

64 KB (per SM)

L1 Cache

16 KB (per SMX)

768 KB

L2 Cache

256 KB

-

Theoretical Performance

18.24 GPixel/s

Pixel Rate

9.888 GPixel/s

36.48 GTexel/s

Texture Rate

39.55 GTexel/s

-

1166 GFLOPS

FP32 (float)

949.2 GFLOPS

145.8 GFLOPS

FP64 (double)

39.55 GFLOPS

Board Design

365W

TDP

65W

750 W

Suggested PSU

250 W

3x DVI 1x mini-DisplayPort

Outputs

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

2x 8-pin

Power Connectors

None

Graphics Processor

GF100

GPU Name

GK106

GF100-375-A3

GPU Variant

GK106-200-A1

Fermi

Architecture

Kepler

TSMC

Foundry

TSMC

40 nm

Process Size

28 nm

3.1 billion

Transistors

2.54 billion

529 mm²

Die Size

221 mm²

Graphics Features

12 (11_0)

DirectX

12 (11_0)

4.6

OpenGL

4.6

1.1

OpenCL

3.0

N/A

Vulkan

1.1

2.0

CUDA

3.0

5.1

Shader Model

5.1

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