AMD Radeon HD 7970 vs NVIDIA GeForce GTX 660

VS

AMD Radeon HD 7970

NVIDIA GeForce GTX 660

We compared two Desktop platform GPUs: 3GB VRAM Radeon HD 7970 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 7970 's Advantages

More VRAM (3GB vs 2GB)

Larger VRAM bandwidth (264.0GB/s vs 144.2GB/s)

1088 additional rendering cores

NVIDIA GeForce GTX 660 's Advantages

Released 9 months late

Boost Clock1032MHz

Lower TDP (140W vs 250W)

Score

Benchmark

FP32 (float)

Radeon HD 7970 +91%

3.789 TFLOPS

GeForce GTX 660

1.981 TFLOPS

3DMark Time Spy

Radeon HD 7970 +74%

2279

GeForce GTX 660

1308

Radeon HD 7970

VS

GeForce GTX 660

Graphics Card

Dec 2011

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

1375 MHz

Memory Clock

1502 MHz

Memory

3GB

Memory Size

2GB

GDDR5

Memory Type

GDDR5

384bit

Memory Bus

192bit

264.0GB/s

Bandwidth

144.2GB/s

Render Config

32

Compute Units

-

2048

Shading Units

960

128

TMUs

80

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

20.64 GPixel/s

118.4 GTexel/s

Texture Rate

82.56 GTexel/s

-

3.789 TFLOPS

FP32 (float)

1.981 TFLOPS

947.2 GFLOPS

FP64 (double)

82.56 GFLOPS

Board Design

250W

TDP

140W

600 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 + 1x 8-pin

Power Connectors

1x 6-pin

Graphics Processor

Tahiti

GPU Name

GK106

Tahiti XT (215-0821060)

GPU Variant

GK106-400-A1

GCN 1.0

Architecture

Kepler

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

4.313 billion

Transistors

2.54 billion

352 mm²

Die Size

221 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

Related GPU Comparisons

1

AMD Radeon HD 7970 vs ATI Radeon HD 2400 XT

2

AMD Radeon HD 7970 vs NVIDIA GeForce GTX 1060 8 GB GDDR5X

3

AMD Radeon HD 7970 vs AMD Radeon RX Vega Nano

4

AMD Radeon HD 7970 vs ATI FireMV 2250 PCIe x1

5

AMD Radeon HD 7970 vs AMD FirePro W8000

6

AMD Radeon HD 7970 vs NVIDIA GeForce 9600 GS OEM

7

AMD Radeon HD 7970 vs NVIDIA GeForce 9600 GT

8

AMD Radeon HD 7970 vs AMD Radeon HD 7670 OEM

9

AMD Radeon HD 7970 vs AMD Radeon HD 6290

10

AMD Radeon HD 7970 vs NVIDIA GeForce GTX 970

Related News

1

NVIDIA GB202 Chip Unveiled for the First Time, to be Used in RTX 5090 with 512-bit GDDR7 Memory

2

Strix Halo Integrated Graphics Score Appears on Passmark, Currently Slightly Below RTX 3060 12GB

3

AMD Unveils New RX 9070 XT Graphics Card Performance: Positioned Between RX 7900 GRE and RX 7900 XT

4

Double the Excitement! AMD FSR 4.0 to Launch Alongside RX 9070 XT Graphics Card

5

CPU-Z Minor Update: Support for Intel's Four New Products and New Memory

6

CXMT Reportedly Achieves 80% Yield in DDR5 Production

7

Intel Wildcat Lake Appears on Shipping List with FCBGA1516 Socket, Poised to Replace Alder Lake-N

8

The Commencement of ARM and Qualcomm Licensing Dispute Trial: Potential Major Impact on PC Market

9

NVIDIA Allegedly Equips RTX 5080 with 30Gbps Memory Speed, Other Models to Feature 28Gbps

10

Intel Reports High Return Rates for Devices Featuring Snapdragon X Series; Qualcomm Counters with 'Industry Standard' Claim