NVIDIA GeForce GT 645 OEM vs ATI FirePro V7800P

VS

NVIDIA GeForce GT 645 OEM

ATI FirePro V7800P

We compared two Desktop platform GPUs: 1024MB VRAM GeForce GT 645 OEM and 2GB VRAM FirePro V7800P 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 138W)

ATI FirePro V7800P 's Advantages

More VRAM (2GB vs 1024GB)

Larger VRAM bandwidth (128.0GB/s vs 91.87GB/s)

1152 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce GT 645 OEM

0.894 TFLOPS

FirePro V7800P +125%

2.016 TFLOPS

GeForce GT 645 OEM

VS

FirePro V7800P

Graphics Card

Apr 2012

Release Date

May 2011

GeForce 600

Generation

FirePro

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

957 MHz

Memory Clock

1000 MHz

Memory

1024MB

Memory Size

2GB

GDDR5

Memory Type

GDDR5

192bit

Memory Bus

256bit

91.87GB/s

Bandwidth

128.0GB/s

Render Config

-

Compute Units

18

6

SM Count

-

288

Shading Units

1440

48

TMUs

72

24

ROPs

32

-

64 KB (per SM)

L1 Cache

8 KB (per CU)

384 KB

L2 Cache

512 KB

-

Theoretical Performance

9.312 GPixel/s

Pixel Rate

22.40 GPixel/s

37.25 GTexel/s

Texture Rate

50.40 GTexel/s

-

894.0 GFLOPS

FP32 (float)

2.016 TFLOPS

74.50 GFLOPS

FP64 (double)

403.2 GFLOPS

Board Design

102W

TDP

138W

300 W

Suggested PSU

300 W

2x DVI 1x mini-HDMI 1.3a

Outputs

1x DisplayPort 1.1

-

Power Connectors

1x 6-pin

Graphics Processor

GF114

GPU Name

Cypress

-

GPU Variant

Cypress PRO GL

Fermi 2.0

Architecture

TeraScale 2

TSMC

Foundry

TSMC

40 nm

Process Size

40 nm

1.95 billion

Transistors

2.154 billion

332 mm²

Die Size

334 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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