GeForce GTX 660M vs Radeon HD 6990M
Find out if it is worth upgrading your current GPU setup by comparing GeForce GTX 660M and Radeon HD 6990M. Here you can take a closer look at graphics cards specs, such as core clock speed, memory type and size, display connectors, etc. The price, overall benchmark and gaming performances are usually defining factors when it comes to choosing between GeForce GTX 660M and Radeon HD 6990M. Make sure that the graphics card has compatible dimensions and will properly fit in your new or current computer case. Also these graphics cards may have different system power recommendations, so take that into consideration and upgrade your PSU if necessary.
GeForce GTX 660M and Radeon HD 6990M are Laptop Graphics Cards
Note: GeForce GTX 660M and Radeon HD 6990M are only used in laptop graphics. They have 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 GeForce GTX 660M or Radeon HD 6990M here:
Main Specs
GeForce GTX 660M
Radeon HD 6990M
Power consumption (TDP)
50 Watt
100 Watt
Interface
MXM-B (3.0)
MXM-B (3.0)
Supplementary power connectors
None
Memory type
GDDR5
GDDR5
Maximum RAM amount
2 GB
2 GB
Display Connectors
No outputs
No outputs
Check Price
Check Price
Radeon HD 6990M has 100% more power consumption, than GeForce GTX 660M.
Both video cards are using MXM-B (3.0) interface connection to a motherboard.
GeForce GTX 660M and Radeon HD 6990M have maximum RAM of 2 GB.
Both cards are used in Laptops.
GeForce GTX 660M is build with Kepler architecture, and Radeon HD 6990M - with Terascale 2.
Core clock speed of GeForce GTX 660M is 120 MHz higher, than Radeon HD 6990M.
GeForce GTX 660M is manufactured by 28 nm process technology, and Radeon HD 6990M - by 40 nm process technology.
Memory clock speed of GeForce GTX 660M is 1100 MHz higher, than Radeon HD 6990M.
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
6−7
14−16
ultra / 1080p
4−5
8−9
QHD / 1440p
0−1
3−4
low / 720p
16−18
30−33
medium / 1080p
8−9
16−18
The average gaming FPS of Radeon HD 6990M in Assassin's Creed Odyssey is 100% more, than GeForce GTX 660M.
high / 1080p
12−14
21−24
ultra / 1080p
10−11
18−20
QHD / 1440p
0−1
6−7
4K / 2160p
−
5−6
low / 720p
24−27
45−50
medium / 1080p
12−14
24−27
The average gaming FPS of Radeon HD 6990M in Battlefield 5 is 86% more, than GeForce GTX 660M.
low / 768p
45−50
45−50
high / 1080p
45−50
−
QHD / 1440p
0−1
0−1
GeForce GTX 660M and Radeon HD 6990M have the same average FPS in Call of Duty: Warzone.
low / 768p
130−140
200−210
medium / 768p
110−120
170−180
ultra / 1080p
50−55
90−95
QHD / 1440p
27−30
50−55
4K / 2160p
27−30
30−33
high / 768p
80−85
130−140
The average gaming FPS of Radeon HD 6990M in Counter-Strike: Global Offensive is 57% more, than GeForce GTX 660M.
low / 768p
55−60
55−60
ultra / 1080p
18−20
35−40
medium / 1080p
45−50
45−50
The average gaming FPS of Radeon HD 6990M in Cyberpunk 2077 is 14% more, than GeForce GTX 660M.
low / 768p
80−85
100−110
medium / 768p
55−60
90−95
ultra / 1080p
30−35
60−65
The average gaming FPS of Radeon HD 6990M in Dota 2 is 50% more, than GeForce GTX 660M.
high / 1080p
8−9
16−18
ultra / 1080p
7−8
14−16
4K / 2160p
3−4
6−7
low / 720p
18−20
35−40
medium / 1080p
8−9
18−20
The average gaming FPS of Radeon HD 6990M in Far Cry 5 is 111% more, than GeForce GTX 660M.
high / 1080p
14−16
24−27
ultra / 1080p
10−11
18−20
QHD / 1440p
−
16−18
low / 720p
60−65
95−100
medium / 1080p
21−24
50−55
The average gaming FPS of Radeon HD 6990M in Fortnite is 77% more, than GeForce GTX 660M.
high / 1080p
12−14
24−27
ultra / 1080p
10−12
18−20
QHD / 1440p
1−2
8−9
low / 720p
24−27
50−55
medium / 1080p
14−16
27−30
The average gaming FPS of Radeon HD 6990M in Forza Horizon 4 is 100% more, than GeForce GTX 660M.
low / 768p
50−55
80−85
medium / 768p
45−50
70−75
high / 1080p
12−14
27−30
ultra / 1080p
6−7
10−12
QHD / 1440p
0−1
2−3
The average gaming FPS of Radeon HD 6990M in Grand Theft Auto V is 65% more, than GeForce GTX 660M.
high / 1080p
4−5
9−10
ultra / 1080p
3−4
7−8
4K / 2160p
0−1
2−3
low / 720p
12−14
27−30
medium / 1080p
6−7
12−14
The average gaming FPS of Radeon HD 6990M in Metro Exodus is 133% more, than GeForce GTX 660M.
low / 768p
95−100
110−120
high / 1080p
90−95
−
ultra / 1080p
80−85
100−110
medium / 1080p
90−95
100−110
The average gaming FPS of Radeon HD 6990M in Minecraft is 20% more, than GeForce GTX 660M.
high / 1080p
16−18
21−24
ultra / 1080p
14−16
16−18
low / 720p
30−35
55−60
medium / 1080p
18−20
24−27
The average gaming FPS of Radeon HD 6990M in PLAYERUNKNOWN'S BATTLEGROUNDS is 50% more, than GeForce GTX 660M.
high / 1080p
−
14−16
ultra / 1080p
7−8
9−10
QHD / 1440p
0−1
0−1
low / 720p
12−14
27−30
medium / 1080p
10−12
16−18
The average gaming FPS of Radeon HD 6990M in Red Dead Redemption 2 is 80% more, than GeForce GTX 660M.
low / 768p
24−27
50−55
medium / 768p
16−18
30−35
high / 1080p
9−10
18−20
ultra / 1080p
6−7
10−11
4K / 2160p
6−7
8−9
The average gaming FPS of Radeon HD 6990M in The Witcher 3: Wild Hunt is 84% more, than GeForce GTX 660M.
low / 768p
85−90
100−105
medium / 768p
45−50
60−65
ultra / 1080p
18−20
30−35
high / 768p
35−40
50−55
The average gaming FPS of Radeon HD 6990M in World of Tanks is 31% more, than GeForce GTX 660M.
Full Specs
GeForce GTX 660M
Radeon HD 6990M
Architecture
Kepler
Terascale 2
Code name
N13E-GE
Blackcomb XTX
Type
Laptop
Laptop
Release date
22 March 2012
12 July 2011
Pipelines
384
1120
Core clock speed
835 MHz
715 MHz
Boost Clock
950 MHz
Transistor count
1,270 million
1,700 million
Manufacturing process technology
28 nm
40 nm
Texture fill rate
30.4 billion/sec
40.04
Floating-point performance
729.6 gflops
1,601.6 gflops
Memory bus width
128bit
256 Bit
Memory clock speed
2000 MHz
900 MHz
Memory bandwidth
64.0 GB/s
115.2 GB/s
Shared memory
-
-
DirectX
12 API
11.2 (11_0)
Shader Model
5.1
5.0
OpenGL
4.5
4.4
OpenCL
1.1
1.2
Vulkan
1.1.126
N/A
CUDA
+
CUDA cores
384
Bus support
PCI Express 2.0, PCI Express 3.0
SLI options
+
HDMI
+
HDCP
+
Maximum VGA resolution
Up to 2048x1536
Bitcoin / BTC (SHA256)
36 Mh/s
Laptop size
large
large
Optimus
+
Check Price
Check Price
