ATI FirePro V7900 vs NVIDIA GeForce GT 645 OEM

VS

ATI FirePro V7900

NVIDIA GeForce GT 645 OEM

We compared two Desktop platform GPUs: 2GB VRAM FirePro V7900 and 1024MB VRAM GeForce GT 645 OEM to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

ATI FirePro V7900 's Advantages

More VRAM (2GB vs 1024GB)

Larger VRAM bandwidth (160.0GB/s vs 91.87GB/s)

992 additional rendering cores

NVIDIA GeForce GT 645 OEM 's Advantages

Released 11 months late

Lower TDP (102W vs 150W)

Score

Benchmark

FP32 (float)

FirePro V7900 +107%

1.856 TFLOPS

GeForce GT 645 OEM

0.894 TFLOPS

FirePro V7900

VS

GeForce GT 645 OEM

Graphics Card

May 2011

Release Date

Apr 2012

FirePro

Generation

GeForce 600

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

1250 MHz

Memory Clock

957 MHz

Memory

2GB

Memory Size

1024MB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

192bit

160.0GB/s

Bandwidth

91.87GB/s

Render Config

20

Compute Units

-

SM Count

6

1280

Shading Units

288

80

TMUs

48

32

ROPs

24

-

8 KB (per CU)

L1 Cache

64 KB (per SM)

512 KB

L2 Cache

384 KB

-

Theoretical Performance

23.20 GPixel/s

Pixel Rate

9.312 GPixel/s

58.00 GTexel/s

Texture Rate

37.25 GTexel/s

-

1.856 TFLOPS

FP32 (float)

894.0 GFLOPS

464.0 GFLOPS

FP64 (double)

74.50 GFLOPS

Board Design

150W

TDP

102W

450 W

Suggested PSU

300 W

4x DisplayPort 1.2

Outputs

2x DVI 1x mini-HDMI 1.3a

1x 6-pin

Power Connectors

-

Graphics Processor

Cayman

GPU Name

GF114

Cayman PRO GL

GPU Variant

-

TeraScale 3

Architecture

Fermi 2.0

TSMC

Foundry

TSMC

40 nm

Process Size

40 nm

2.64 billion

Transistors

1.95 billion

389 mm²

Die Size

332 mm²

Graphics Features

11.2 (11_0)

DirectX

12 (11_0)

4.4

OpenGL

4.6

1.2

OpenCL

1.1

N/A

Vulkan

N/A

-

CUDA

2.1

5.0

Shader Model

5.1

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