NVIDIA GeForce GT 645 OEM vs ATI FireGL V7700

VS

NVIDIA GeForce GT 645 OEM

ATI FireGL V7700

We compared two Desktop platform GPUs: 1024MB VRAM GeForce GT 645 OEM and 512MB VRAM FireGL V7700 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 4 years and 5 months late

More VRAM (1024GB vs 512GB)

Larger VRAM bandwidth (91.87GB/s vs 72.06GB/s)

ATI FireGL V7700 's Advantages

32 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce GT 645 OEM +79%

0.894 TFLOPS

FireGL V7700

0.497 TFLOPS

GeForce GT 645 OEM

VS

FireGL V7700

Graphics Card

Apr 2012

Release Date

Nov 2007

GeForce 600

Generation

FireGL

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

957 MHz

Memory Clock

1126 MHz

Memory

1024MB

Memory Size

512MB

GDDR5

Memory Type

GDDR4

192bit

Memory Bus

256bit

91.87GB/s

Bandwidth

72.06GB/s

Render Config

-

Compute Units

4

6

SM Count

-

288

Shading Units

320

48

TMUs

16

24

ROPs

16

-

64 KB (per SM)

L1 Cache

-

384 KB

L2 Cache

256 KB

-

Theoretical Performance

9.312 GPixel/s

Pixel Rate

12.43 GPixel/s

37.25 GTexel/s

Texture Rate

12.43 GTexel/s

-

894.0 GFLOPS

FP32 (float)

497.3 GFLOPS

74.50 GFLOPS

FP64 (double)

99.46 GFLOPS

Board Design

102W

TDP

Unknown

300 W

Suggested PSU

200 W

2x DVI 1x mini-HDMI 1.3a

Outputs

1x DVI 1x DisplayPort 1x S-Video

-

Power Connectors

1x 6-pin

Graphics Processor

GF114

GPU Name

RV670

-

GPU Variant

RV670 GL

Fermi 2.0

Architecture

TeraScale

TSMC

Foundry

TSMC

40 nm

Process Size

55 nm

1.95 billion

Transistors

0.666 billion

332 mm²

Die Size

192 mm²

Graphics Features

12 (11_0)

DirectX

10.1 (10_1)

4.6

OpenGL

3.3 (full) 4.0 (partial)

1.1

OpenCL

N/A

Vulkan

N/A

2.1

CUDA

-

5.1

Shader Model

4.1

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