NVIDIA GeForce GTX 660 vs AMD Radeon RX 6700 XT

VS

NVIDIA GeForce GTX 660

AMD Radeon RX 6700 XT

We compared two Desktop platform GPUs: 2GB VRAM GeForce GTX 660 and 12GB VRAM Radeon RX 6700 XT to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GTX 660 's Advantages

Lower TDP (140W vs 230W)

AMD Radeon RX 6700 XT 's Advantages

Released 8 years and 6 months late

Boost Clock has increased by 150% (2581MHz vs 1032MHz)

More VRAM (12GB vs 2GB)

Larger VRAM bandwidth (384.0GB/s vs 144.2GB/s)

1600 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce GTX 660

1.981 TFLOPS

Radeon RX 6700 XT +566%

13.21 TFLOPS

3DMark Time Spy

GeForce GTX 660

1308

Radeon RX 6700 XT +876%

12779

Blender

GeForce GTX 660

111

Radeon RX 6700 XT +1474%

1748

GeForce GTX 660

VS

Radeon RX 6700 XT

Graphics Card

Sep 2012

Release Date

Mar 2021

GeForce 600

Generation

Navi II

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 4.0 x16

Clock Speeds

980 MHz

Base Clock

2321 MHz

1032 MHz

Boost Clock

2581 MHz

1502 MHz

Memory Clock

2000 MHz

Memory

2GB

Memory Size

12GB

GDDR5

Memory Type

GDDR6

192bit

Memory Bus

192bit

144.2GB/s

Bandwidth

384.0GB/s

Render Config

-

Compute Units

40

-

960

Shading Units

2560

80

TMUs

160

24

ROPs

64

-

RT Cores

40

16 KB (per SMX)

L1 Cache

128 KB per Array

384 KB

L2 Cache

3 MB

-

L3 Cache

96 MB

Theoretical Performance

20.64 GPixel/s

Pixel Rate

165.2 GPixel/s

82.56 GTexel/s

Texture Rate

413.0 GTexel/s

-

FP16 (half)

26.43 TFLOPS

1.981 TFLOPS

FP32 (float)

13.21 TFLOPS

82.56 GFLOPS

FP64 (double)

825.9 GFLOPS

Board Design

140W

TDP

230W

300 W

Suggested PSU

550 W

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

Outputs

1x HDMI 2.1 3x DisplayPort 1.4a

1x 6-pin

Power Connectors

1x 6-pin + 1x 8-pin

Graphics Processor

GK106

GPU Name

Navi 22

GK106-400-A1

GPU Variant

Navi 22 XT (215-127000006)

Kepler

Architecture

RDNA 2.0

TSMC

Foundry

TSMC

28 nm

Process Size

7 nm

2.54 billion

Transistors

17.2 billion

221 mm²

Die Size

335 mm²

Graphics Features

12 (11_0)

DirectX

12 Ultimate (12_2)

4.6

OpenGL

4.6

3.0

OpenCL

2.1

1.1

Vulkan

1.3

3.0

CUDA

-

5.1

Shader Model

6.5

Related GPU Comparisons

1

NVIDIA GeForce GTX 660 vs AMD Radeon PRO V710

2

NVIDIA GeForce GTX 660 vs NVIDIA GeForce GTS 450

3

NVIDIA GeForce GTX 660 vs NVIDIA GeForce RTX 5070 Ti

4

NVIDIA GeForce GTX 660 vs AMD Radeon HD 6670

5

NVIDIA GeForce GTX 660 vs AMD Radeon R5 435 OEM

6

NVIDIA GeForce GTX 660 vs NVIDIA GeForce GTX 275

7

NVIDIA GeForce GTX 660 vs NVIDIA GeForce RTX 3060 8 GB

8

NVIDIA GeForce GTX 660 vs NVIDIA T1000 8 GB

9

NVIDIA GeForce GTX 660 vs AMD Radeon 550

10

NVIDIA GeForce GTX 660 vs NVIDIA Quadro FX 540

Related News

1

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

2

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

3

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

4

Intel Confirms Panther Lake Adopts 18A Process, ES0 Samples Already Sent to Customers

5

Complete Lineup of Core Ultra 200HX/H/U and Core 200H/U Revealed: 31 Models to Dazzle the Eyes

6

Amechi Unveils V1 Mini PC: Only 0.33L Volume with 150W Power Consumption

7

iPhone 17 Series Set for Major Design Overhaul: Camera Module Transformed into Sleek Strip

8

The Thinnest iPhone Ever! iPhone 17 Air Reportedly Enters Foxconn's NPI Stage

9

Apple Allegedly Cancels M4 Extreme, Originally Planned for Mac Pro with 64-Core CPU and 160-Core GPU

10

Cyberpunk 2077 Update 2.2: Intel Arrow Lake Gaming Performance Soars by 33%!