AMD Radeon HD 7950 Monica BIOS 2 vs NVIDIA GeForce GT 645 OEM

VS

AMD Radeon HD 7950 Monica BIOS 2

NVIDIA GeForce GT 645 OEM

We compared two Desktop platform GPUs: 3GB VRAM Radeon HD 7950 Monica BIOS 2 and 1024MB VRAM GeForce GT 645 OEM to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 7950 Monica BIOS 2 's Advantages

More VRAM (3GB vs 1024GB)

Larger VRAM bandwidth (240.0GB/s vs 91.87GB/s)

480 additional rendering cores

Lower TDP (85W vs 102W)

Score

Benchmark

FP32 (float)

Radeon HD 7950 Monica BIOS 2 +37%

1.229 TFLOPS

GeForce GT 645 OEM

0.894 TFLOPS

Radeon HD 7950 Monica BIOS 2

VS

GeForce GT 645 OEM

Graphics Card

Jan 2012

Release Date

Apr 2012

Southern Islands

Generation

GeForce 600

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

1250 MHz

Memory Clock

957 MHz

Memory

3GB

Memory Size

1024MB

GDDR5

Memory Type

GDDR5

384bit

Memory Bus

192bit

240.0GB/s

Bandwidth

91.87GB/s

Render Config

12

Compute Units

-

SM Count

6

768

Shading Units

288

48

TMUs

48

32

ROPs

24

-

16 KB (per CU)

L1 Cache

64 KB (per SM)

768 KB

L2 Cache

384 KB

-

Theoretical Performance

25.60 GPixel/s

Pixel Rate

9.312 GPixel/s

38.40 GTexel/s

Texture Rate

37.25 GTexel/s

-

1229 GFLOPS

FP32 (float)

894.0 GFLOPS

307.2 GFLOPS

FP64 (double)

74.50 GFLOPS

Board Design

85W

TDP

102W

250 W

Suggested PSU

300 W

1x DVI 1x HDMI 1.4a 2x mini-DisplayPort 1.2

Outputs

2x DVI 1x mini-HDMI 1.3a

1x 6-pin + 1x 8-pin

Power Connectors

-

Graphics Processor

Tahiti

GPU Name

GF114

Tahiti PRO (215-0821056)

GPU Variant

-

GCN 1.0

Architecture

Fermi 2.0

TSMC

Foundry

TSMC

28 nm

Process Size

40 nm

4.313 billion

Transistors

1.95 billion

352 mm²

Die Size

332 mm²

Graphics Features

12 (11_1)

DirectX

12 (11_0)

4.6

OpenGL

4.6

1.2

OpenCL

1.1

1.2

Vulkan

N/A

-

CUDA

2.1

5.1

Shader Model

5.1

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