NVIDIA GeForce GTX 275 vs AMD Radeon HD 7950

VS

NVIDIA GeForce GTX 275

AMD Radeon HD 7950

We compared two Desktop platform GPUs: 896MB VRAM GeForce GTX 275 and 3GB VRAM Radeon HD 7950 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 7950 's Advantages

Released 3 years late

More VRAM (3GB vs 896GB)

Larger VRAM bandwidth (240.0GB/s vs 127.0GB/s)

1552 additional rendering cores

Lower TDP (200W vs 219W)

Score

Benchmark

FP32 (float)

GeForce GTX 275

0.674 TFLOPS

Radeon HD 7950 +325%

2.867 TFLOPS

GeForce GTX 275

VS

Radeon HD 7950

Graphics Card

Jan 2009

Release Date

Jan 2012

GeForce 200

Generation

Southern Islands

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

1134 MHz

Memory Clock

1250 MHz

Memory

896MB

Memory Size

3GB

GDDR3

Memory Type

GDDR5

448bit

Memory Bus

384bit

127.0GB/s

Bandwidth

240.0GB/s

Render Config

-

Compute Units

28

30

SM Count

-

240

Shading Units

1792

80

TMUs

112

28

ROPs

32

-

L1 Cache

16 KB (per CU)

224 KB

L2 Cache

768 KB

-

Theoretical Performance

17.72 GPixel/s

Pixel Rate

25.60 GPixel/s

50.64 GTexel/s

Texture Rate

89.60 GTexel/s

-

673.9 GFLOPS

FP32 (float)

2.867 TFLOPS

84.24 GFLOPS

FP64 (double)

716.8 GFLOPS

Board Design

219W

TDP

200W

550 W

Suggested PSU

550 W

2x DVI

Outputs

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

2x 6-pin

Power Connectors

2x 6-pin

Graphics Processor

GT200B

GPU Name

Tahiti

G200-105-B3

GPU Variant

Tahiti PRO (215-0821056)

Tesla 2.0

Architecture

GCN 1.0

TSMC

Foundry

TSMC

55 nm

Process Size

28 nm

1.4 billion

Transistors

4.313 billion

470 mm²

Die Size

352 mm²

Graphics Features

11.1 (10_0)

DirectX

12 (11_1)

3.3

OpenGL

4.6

1.1

OpenCL

1.2

N/A

Vulkan

1.2

1.3

CUDA

-

4.0

Shader Model

5.1

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