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NVIDIA GeForce GTX 660 Rev. 2

Graphics Processor
GK104
Cores
960
TMUs
80
ROPs
24
Memory Size
2 GB
Memory Type
GDDR5
Bus Width
192 bit
The GeForce GTX 660 Rev. 2 was a graphics card by NVIDIA, launched in September 2014. Built on the 28 nm process, and based on the GK104 graphics processor, the card supports DirectX 12.0. The GK104 graphics processor is an average sized chip with a die area of 294 mm² and 3,540 million transistors. Unlike the fully unlocked GeForce GTX 680 Mac Edition, which uses the same GPU but has all 1536 shaders enabled, NVIDIA has disabled some shading units on the GeForce GTX 660 Rev. 2 to reach the product's target shader count. It features 960 shading units, 80 texture mapping units and 24 ROPs. NVIDIA has placed 2,048 MB GDDR5 memory on the card, which are connected using a 192-bit memory interface. The GPU is operating at a frequency of 980 MHz, which can be boosted up to 1032 MHz, memory is running at 1502 MHz.
Being a dual-slot card, the NVIDIA GeForce GTX 660 Rev. 2 draws power from 1x 6-pin power connectors, with power draw rated at 140 W maximum. Display outputs include: 2x DVI, 1x HDMI, 1x DisplayPort. GeForce GTX 660 Rev. 2 is connected to the rest of the system using a PCI-Express 3.0 x16 interface. The card measures 241 mm in length, and features a dual-slot cooling solution.

Graphics Processor

GPU Name
GK104
Architecture
Kepler
Foundry
TSMC
Process Size
28 nm
Transistors
3,540 million
Die Size
294 mm²

Graphics Card

Release Date
Sep 13th, 2014
Generation
GeForce 600
Production
End-of-life
Bus Interface
PCIe 3.0 x16
Reviews
77 in our database

Relative Performance

5%
GeForce 210
6%
GeForce 9400 GT
7%
Radeon HD 4550
9%
Radeon HD 5450
11%
Radeon HD 6450
12%
GeForce GT 520
15%
GeForce GT 220
19%
GeForce GT 430
19%
Radeon HD 5570
21%
Radeon HD 4670
22%
GeForce GT 440
22%
GeForce GT 240
26%
GeForce 9600 GT
27%
Radeon HD 5670
29%
GeForce GT 640
30%
GeForce 9800 GT
32%
Radeon HD 6670
33%
Radeon HD 4830
35%
Radeon HD 4770
37%
Radeon HD 4850
38%
GeForce GTS 250
39%
GeForce GTS 450
40%
Radeon HD 5750
46%
Radeon HD 7750
46%
Radeon HD 5770
47%
GeForce GTX 260
48%
Radeon HD 4870
48%
Radeon Vega 8
48%
GeForce GTX 550 Ti
49%
GeForce GTX 650
51%
Radeon HD 5830
54%
Radeon HD 6790
55%
Radeon HD 4890
57%
GeForce GTX 460
57%
Radeon RX Vega 11
58%
GeForce GT 1030
58%
GeForce GTX 275
59%
Radeon HD 7770 GHz Edition
59%
GeForce GTX 280
60%
GeForce GTX 465
63%
Radeon HD 6850
64%
GeForce GTX 285
69%
Radeon HD 5850
70%
GeForce GTX 650 Ti
70%
Radeon HD 7790
73%
Radeon RX 550
73%
GeForce GTX 470
76%
Radeon HD 6870
81%
Radeon HD 5870
83%
GeForce GTX 560 Ti
84%
Radeon HD 4870 X2
85%
GeForce GTX 750 Ti
86%
Radeon HD 6950
89%
GeForce GTX 295
90%
GeForce GTX 650 Ti Boost
90%
Radeon HD 7850
92%
GeForce GTX 480
96%
Radeon HD 6970
98%
Radeon R7 265
100%
Radeon RX 460
100%
Radeon R7 370
100%
GeForce GTX 660 Rev. 2
100%
GeForce GTX 660
100%
GeForce GTX 570
102%
Radeon RX 560
108%
GeForce GTX 950
109%
Radeon HD 7870 GHz Edition
112%
Radeon R9 270X
113%
GeForce GTX 660 Ti
114%
GeForce GTX 580
115%
GeForce GTX 1050
115%
Radeon HD 7950
117%
Radeon HD 5970
120%
GeForce GTX 760
130%
GeForce GTX 670
133%
GeForce GTX 960
136%
Radeon R9 380
137%
Radeon R9 285
139%
Radeon HD 7970
140%
GeForce GTX 680
143%
GeForce GTX 1050 Ti
147%
GeForce GTX 770
151%
Radeon HD 6990
154%
Radeon R9 280X
156%
GeForce GTX 590
156%
Radeon HD 7970 GHz Edition
173%
GeForce GTX 780
179%
GeForce GTX 1650
191%
Radeon RX 470
193%
Radeon R9 290
204%
Radeon RX 570
206%
Radeon R9 390
207%
Radeon R9 290X
210%
GeForce GTX 970
213%
GeForce GTX TITAN
216%
GeForce GTX 780 Ti
219%
Radeon R9 390X
220%
Radeon HD 7990
221%
Radeon RX 480
223%
GeForce GTX 690
235%
Radeon RX 580
240%
GeForce GTX 980
243%
Radeon R9 FURY
243%
GeForce GTX 1060 6 GB
253%
Radeon RX 590
267%
Radeon R9 295X2
268%
GeForce GTX 1660
271%
Radeon R9 FURY X
276%
GeForce GTX 980 Ti
283%
GeForce GTX TITAN X
308%
GeForce GTX 1660 Ti
308%
GeForce GTX 1070
328%
Radeon RX Vega 56
348%
GeForce GTX 1070 Ti
358%
Radeon RX Vega 64
363%
GeForce GTX 1080
363%
GeForce RTX 2060
378%
Radeon RX 5700
408%
GeForce RTX 2060 SUPER
422%
GeForce RTX 2070
432%
Radeon RX 5700 XT
437%
Radeon VII
449%
TITAN X Pascal
462%
GeForce GTX 1080 Ti
467%
GeForce RTX 2070 SUPER
497%
GeForce RTX 2080
527%
GeForce RTX 2080 SUPER
581%
GeForce RTX 2080 Ti
Based on TPU review data: "Performance Summary" at 1920x1080
Performance estimated based on architecture, shader count and clocks.

Clock Speeds

Base Clock
980 MHz
Boost Clock
1032 MHz
Memory Clock
1502 MHz
6008 MHz effective

Memory

Memory Size
2 GB
Memory Type
GDDR5
Memory Bus
192 bit
Bandwidth
144.2 GB/s

Render Config

Shading Units
960
TMUs
80
ROPs
24
SMX Count
5
L1 Cache
16 KB (per SMX)
L2 Cache
384 KB

Theoretical Performance

Pixel Rate
20.64 GPixel/s
Texture Rate
82.56 GTexel/s
FP32 (float) performance
1.981 TFLOPS
FP64 (double) performance
82.56 GFLOPS (1:24)

Board Design

Slot Width
Dual-slot
Length
9.5 inches
241 mm
TDP
140 W
Outputs
2x DVI
1x HDMI
1x DisplayPort
Power Connectors
1x 6-pin
Board Number
P2004 SKU 11

Graphics Features

DirectX
12.0 (11_0)
OpenGL
4.6
OpenCL
1.2
Vulkan
1.1.103
CUDA
3.0
Shader Model
5.1

Card Notes

2GB: 1536+512
Bandwidth: 96.1+48.1
Bus Width: 128+64

GK104 GPU Notes

L1 Cache is configurable from 16 KB up to 48 KB per SMX

Retail boards based on this design (1)

Name GPU Clock Boost Clock Memory Clock Other Changes
Colorful GTX 660 3 GB 980 MHz 1032 MHz 1502 MHz 3 GB