NVIDIA GeForce GTX 555 OEM vs NVIDIA GeForce GT 645 OEM

VS

NVIDIA GeForce GTX 555 OEM

NVIDIA GeForce GT 645 OEM

We compared two Desktop platform GPUs: 1024MB VRAM GeForce GTX 555 OEM and 1024MB VRAM GeForce GT 645 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

Released 11 months late

Lower TDP (102W vs 150W)

Score

Benchmark

FP32 (float)

GeForce GTX 555 OEM

0.848 TFLOPS

GeForce GT 645 OEM +5%

0.894 TFLOPS

GeForce GTX 555 OEM

VS

GeForce GT 645 OEM

Graphics Card

May 2011

Release Date

Apr 2012

GeForce 500

Generation

GeForce 600

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

957 MHz

Memory Clock

957 MHz

Memory

1024MB

Memory Size

1024MB

GDDR5

Memory Type

GDDR5

192bit

Memory Bus

192bit

91.87GB/s

Bandwidth

91.87GB/s

Render Config

-

6

SM Count

6

288

Shading Units

288

48

TMUs

48

24

ROPs

24

-

64 KB (per SM)

L1 Cache

64 KB (per SM)

384 KB

L2 Cache

384 KB

-

Theoretical Performance

8.832 GPixel/s

Pixel Rate

9.312 GPixel/s

35.33 GTexel/s

Texture Rate

37.25 GTexel/s

-

847.9 GFLOPS

FP32 (float)

894.0 GFLOPS

70.66 GFLOPS

FP64 (double)

74.50 GFLOPS

Board Design

150W

TDP

102W

450 W

Suggested PSU

300 W

2x DVI 1x mini-HDMI 1.3a

Outputs

2x DVI 1x mini-HDMI 1.3a

2x 6-pin

Power Connectors

-

Graphics Processor

GF114

GPU Name

GF114

GF114-200-KB-A1

GPU Variant

-

Fermi 2.0

Architecture

Fermi 2.0

TSMC

Foundry

TSMC

40 nm

Process Size

40 nm

1.95 billion

Transistors

1.95 billion

332 mm²

Die Size

332 mm²

Graphics Features

12 (11_0)

DirectX

12 (11_0)

4.6

OpenGL

4.6

1.1

OpenCL

1.1

N/A

Vulkan

N/A

2.1

CUDA

2.1

5.1

Shader Model

5.1

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