AMD Radeon HD 7850 vs NVIDIA GeForce GTX 660

VS

AMD Radeon HD 7850 NVIDIA GeForce GTX 660

We compared two Desktop platform GPUs: 2GB VRAM Radeon HD 7850 and 2GB VRAM GeForce GTX 660 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 7850 's Advantages

Larger VRAM bandwidth (153.6GB/s vs 144.2GB/s)

64 additional rendering cores

Lower TDP (130W vs 140W)

NVIDIA GeForce GTX 660 's Advantages

Released 6 months late

Boost Clock1032MHz

Score

Benchmark

FP32 (float)

Radeon HD 7850

1.761 TFLOPS

GeForce GTX 660 +12%

1.981 TFLOPS

3DMark Time Spy

Radeon HD 7850

1312

GeForce GTX 660

1307

Radeon HD 7850

VS

GeForce GTX 660

Graphics Card

Mar 2012

Release Date

Sep 2012

Southern Islands

Generation

GeForce 600

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

Base Clock

980 MHz

-

Boost Clock

1032 MHz

1200 MHz

Memory Clock

1502 MHz

Memory

2GB

Memory Size

2GB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

192bit

153.6GB/s

Bandwidth

144.2GB/s

Render Config

-

SM Count

-

16

Compute Units

-

1024

Shading Units

960

64

TMUs

80

32

ROPs

24

-

Tensor Cores

-

RT Cores

-

16 KB (per CU)

L1 Cache

16 KB (per SMX)

512 KB

L2 Cache

384 KB

Theoretical Performance

27.52 GPixel/s

Pixel Rate

20.64 GPixel/s

55.04 GTexel/s

Texture Rate

82.56 GTexel/s

-

FP16 (half)

-

1.761 TFLOPS

FP32 (float)

1.981 TFLOPS

110.1 GFLOPS

FP64 (double)

82.56 GFLOPS

Graphics Processor

Pitcairn

GPU Name

GK106

Pitcairn PRO (215-0828062)

GPU Variant

GK106-400-A1

GCN 1.0

Architecture

Kepler

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

2.8 billion

Transistors

2.54 billion

212 mm²

Die Size

221 mm²

Board Design

130W

TDP

140W

300 W

Suggested PSU

300 W

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

Outputs

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

1x 6-pin

Power Connectors

1x 6-pin

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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