AMD Radeon HD 8950 OEM vs NVIDIA GeForce GTX 660 Ti

VS

AMD Radeon HD 8950 OEM

NVIDIA GeForce GTX 660 Ti

We compared two Desktop platform GPUs: 3GB VRAM Radeon HD 8950 OEM and 2GB VRAM GeForce GTX 660 Ti to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 8950 OEM 's Advantages

More VRAM (3GB vs 2GB)

Larger VRAM bandwidth (240.0GB/s vs 144.2GB/s)

448 additional rendering cores

NVIDIA GeForce GTX 660 Ti 's Advantages

Boost Clock has increased by 6% (980MHz vs 925MHz)

Lower TDP (150W vs 200W)

Score

Benchmark

FP32 (float)

Radeon HD 8950 OEM +25%

3.315 TFLOPS

GeForce GTX 660 Ti

2.634 TFLOPS

Radeon HD 8950 OEM

VS

GeForce GTX 660 Ti

Graphics Card

Jan 2013

Release Date

Aug 2012

Sea Islands

Generation

GeForce 600

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

850 MHz

Base Clock

915 MHz

925 MHz

Boost Clock

980 MHz

1250 MHz

Memory Clock

1502 MHz

Memory

3GB

Memory Size

2GB

GDDR5

Memory Type

GDDR5

384bit

Memory Bus

192bit

240.0GB/s

Bandwidth

144.2GB/s

Render Config

28

Compute Units

-

1792

Shading Units

1344

112

TMUs

112

32

ROPs

24

-

16 KB (per CU)

L1 Cache

16 KB (per SMX)

768 KB

L2 Cache

384 KB

-

Theoretical Performance

29.60 GPixel/s

Pixel Rate

27.44 GPixel/s

103.6 GTexel/s

Texture Rate

109.8 GTexel/s

-

3.315 TFLOPS

FP32 (float)

2.634 TFLOPS

828.8 GFLOPS

FP64 (double)

109.8 GFLOPS

Board Design

200W

TDP

150W

550 W

Suggested PSU

450 W

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

Outputs

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

2x 6-pin

Power Connectors

2x 6-pin

Graphics Processor

Tahiti

GPU Name

GK104

Tahiti PRO (215-0821056)

GPU Variant

GK104-300-KD-A2

GCN 1.0

Architecture

Kepler

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

4.313 billion

Transistors

3.54 billion

352 mm²

Die Size

294 mm²

Graphics Features

12 (11_1)

DirectX

12 (11_0)

4.6

OpenGL

4.6

1.2

OpenCL

3.0

1.2

Vulkan

1.1

-

CUDA

3.0

5.1

Shader Model

5.1

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