GeForce GTX 660 Ti vs Radeon HD 6990M Crossfire
When comparing GeForce GTX 660 Ti and Radeon HD 6990M Crossfire, we look primarily at benchmarks and game tests. But it is not only about the numbers. Often you can find third-party models with higher clock speeds, better cooling, or a customizable RGB lighting. Not all of them will have all the features you need. Another thing to consider is the port selection. Most graphics cards have at least one DisplayPort and HDMI interface, but some monitors require DVI. Before you buy, check the TDP of the graphics card - this characteristic will help you estimate the consumption of the graphics card. You may even have to upgrade your PSU to meet its requirements. An important factor when choosing between GeForce GTX 660 Ti and Radeon HD 6990M Crossfire is the price. Does the additional cost justify the performance hit? Our comparison should help you make the right decision.
Radeon HD 6990M Crossfire is a Laptop Graphics Card
Note: Radeon HD 6990M Crossfire is only used in laptop graphics. It has lower GPU clock speed compared to the desktop variant, which results in lower power consumption, but also 10-30% lower gaming performance. Check available laptop models with Radeon HD 6990M Crossfire here:
Main Specs
GeForce GTX 660 Ti
Radeon HD 6990M Crossfire
Power consumption (TDP)
150 Watt
Interface
PCIe 3.0 x16
Supplementary power connectors
Two 6-pin
Memory type
GDDR5
GDDR5
Maximum RAM amount
2 GB
2x2 GB
Display Connectors
2x DVI, 1x HDMI, 1x DisplayPort
Check Price
Check Price
GeForce GTX 660 Ti and Radeon HD 6990M Crossfire have maximum RAM of 2 GB.
GeForce GTX 660 Ti is used in Desktops, and Radeon HD 6990M Crossfire - in Laptops.
GeForce GTX 660 Ti is build with Kepler architecture, and Radeon HD 6990M Crossfire - with Terascale 2.
Core clock speed of GeForce GTX 660 Ti is 200 MHz higher, than Radeon HD 6990M Crossfire.
GeForce GTX 660 Ti is manufactured by 28 nm process technology, and Radeon HD 6990M Crossfire - by 40 nm process technology.
Memory clock speed of Radeon HD 6990M Crossfire is 894 MHz higher, than GeForce GTX 660 Ti.
Game benchmarks
Assassin's Creed Odyssey
Battlefield 5
Call of Duty: Warzone
Counter-Strike: Global Offensive
Cyberpunk 2077
Dota 2
Far Cry 5
Fortnite
Forza Horizon 4
Grand Theft Auto V
Metro Exodus
Minecraft
PLAYERUNKNOWN'S BATTLEGROUNDS
Red Dead Redemption 2
The Witcher 3: Wild Hunt
World of Tanks
high / 1080p
21−24
35−40
ultra / 1080p
12−14
21−24
QHD / 1440p
8−9
16−18
4K / 2160p
5−6
10−11
low / 720p
40−45
60−65
medium / 1080p
27−30
40−45
The average gaming FPS of Radeon HD 6990M Crossfire in Assassin's Creed Odyssey is 60% more, than GeForce GTX 660 Ti.
high / 1080p
35−40
55−60
ultra / 1080p
30−35
45−50
QHD / 1440p
14−16
35−40
4K / 2160p
9−10
18−20
low / 720p
70−75
100−110
medium / 1080p
40−45
60−65
The average gaming FPS of Radeon HD 6990M Crossfire in Battlefield 5 is 58% more, than GeForce GTX 660 Ti.
low / 768p
50−55
50−55
QHD / 1440p
0−1
0−1
GeForce GTX 660 Ti and Radeon HD 6990M Crossfire have the same average FPS in Call of Duty: Warzone.
low / 768p
230−240
250−260
medium / 768p
210−220
220−230
ultra / 1080p
120−130
180−190
QHD / 1440p
100−110
110−120
4K / 2160p
55−60
70−75
high / 768p
170−180
210−220
The average gaming FPS of Radeon HD 6990M Crossfire in Counter-Strike: Global Offensive is 16% more, than GeForce GTX 660 Ti.
low / 768p
60−65
60−65
ultra / 1080p
55−60
−
medium / 1080p
55−60
55−60
GeForce GTX 660 Ti and Radeon HD 6990M Crossfire have the same average FPS in Cyberpunk 2077.
low / 768p
120−130
120−130
medium / 768p
110−120
110−120
ultra / 1080p
85−90
100−110
The average gaming FPS of Radeon HD 6990M Crossfire in Dota 2 is 5% more, than GeForce GTX 660 Ti.
high / 1080p
27−30
45−50
ultra / 1080p
24−27
40−45
QHD / 1440p
20−22
27−30
4K / 2160p
9−10
14−16
low / 720p
55−60
80−85
medium / 1080p
30−33
45−50
The average gaming FPS of Radeon HD 6990M Crossfire in Far Cry 5 is 53% more, than GeForce GTX 660 Ti.
high / 1080p
35−40
60−65
ultra / 1080p
27−30
45−50
QHD / 1440p
16−18
27−30
4K / 2160p
−
27−30
low / 720p
130−140
180−190
medium / 1080p
75−80
110−120
The average gaming FPS of Radeon HD 6990M Crossfire in Fortnite is 47% more, than GeForce GTX 660 Ti.
high / 1080p
35−40
60−65
ultra / 1080p
27−30
45−50
QHD / 1440p
16−18
30−35
4K / 2160p
14−16
24−27
low / 720p
75−80
100−110
medium / 1080p
40−45
65−70
The average gaming FPS of Radeon HD 6990M Crossfire in Forza Horizon 4 is 55% more, than GeForce GTX 660 Ti.
low / 768p
110−120
140−150
medium / 768p
95−100
120−130
high / 1080p
45−50
70−75
ultra / 1080p
18−20
30−35
QHD / 1440p
9−10
21−24
The average gaming FPS of Radeon HD 6990M Crossfire in Grand Theft Auto V is 38% more, than GeForce GTX 660 Ti.
high / 1080p
14−16
24−27
ultra / 1080p
10−12
20−22
QHD / 1440p
10−12
16−18
4K / 2160p
3−4
8−9
low / 720p
40−45
65−70
medium / 1080p
20−22
30−35
The average gaming FPS of Radeon HD 6990M Crossfire in Metro Exodus is 64% more, than GeForce GTX 660 Ti.
low / 768p
120−130
130−140
medium / 1080p
110−120
120−130
The average gaming FPS of Radeon HD 6990M Crossfire in Minecraft is 8% more, than GeForce GTX 660 Ti.
ultra / 1080p
14−16
14−16
low / 720p
75−80
100−110
medium / 1080p
18−20
18−20
The average gaming FPS of Radeon HD 6990M Crossfire in PLAYERUNKNOWN'S BATTLEGROUNDS is 24% more, than GeForce GTX 660 Ti.
high / 1080p
16−18
24−27
ultra / 1080p
10−12
16−18
QHD / 1440p
3−4
10−11
4K / 2160p
2−3
7−8
low / 720p
40−45
65−70
medium / 1080p
21−24
35−40
The average gaming FPS of Radeon HD 6990M Crossfire in Red Dead Redemption 2 is 68% more, than GeForce GTX 660 Ti.
low / 768p
80−85
130−140
medium / 768p
50−55
85−90
high / 1080p
27−30
45−50
ultra / 1080p
16−18
24−27
4K / 2160p
9−10
16−18
The average gaming FPS of Radeon HD 6990M Crossfire in The Witcher 3: Wild Hunt is 63% more, than GeForce GTX 660 Ti.
low / 768p
90−95
90−95
medium / 768p
60−65
60−65
ultra / 1080p
40−45
50−55
high / 768p
55−60
60−65
The average gaming FPS of Radeon HD 6990M Crossfire in World of Tanks is 6% more, than GeForce GTX 660 Ti.
Full Specs
GeForce GTX 660 Ti
Radeon HD 6990M Crossfire
Architecture
Kepler
Terascale 2
Code name
GK104
Blackcomb XTX
Type
Desktop
Laptop
Release date
16 August 2012
12 July 2011
Pipelines
1344
2240
Core clock speed
915 MHz
715 MHz
Boost Clock
980 MHz
Transistor count
3,540 million
2x1700 Million
Manufacturing process technology
28 nm
40 nm
Texture fill rate
102.5 billion/sec
Floating-point performance
2,459.5 gflops
Length
9.5" (24.1 cm)
Memory bus width
192-bit GDDR5
256 Bit
Memory clock speed
6.0 GB/s
900 MHz
Memory bandwidth
144.2 GB/s
Shared memory
-
-
DirectX
12 (11_0)
DirectX 11, Shader 5.0
Shader Model
5.1
OpenGL
4.3
OpenCL
1.2
Vulkan
1.1.126
CUDA
+
CUDA cores
1344
Bus support
PCI Express 3.0
Height
4.376" (11.1 cm)
SLI options
+
Multi monitor support
4 displays
HDMI
+
HDCP
+
Maximum VGA resolution
2048x1536
Audio input for HDMI
Internal
3D Blu-Ray
+
3D Gaming
+
3D Vision
+
Bitcoin / BTC (SHA256)
99 Mh/s
Laptop size
large
Check Price
Check Price
