GeForce GTX 660M vs Radeon HD 8790M
If you are going to buy a new graphics card and are choosing between GeForce GTX 660M and Radeon HD 8790M, there are a couple of things to consider. Cards with more VRAM in general perform better and allow you to play on higher graphics settings. Size also makes a difference. A model with a large heatsink can occupy up to three expansion slots on a motherboard. Be sure you have enough room in your PC case. When comparing GPUs with different architectures, more processing cores and even higher TFLOPS will not always translate to better performance. To help you decide which GPU you need, we have measured frame rates in a number of popular games. For more on how the GeForce GTX 660M stacks up against Radeon HD 8790M, check out specs charts below.
GeForce GTX 660M and Radeon HD 8790M are Laptop Graphics Cards
Note: GeForce GTX 660M and Radeon HD 8790M 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 8790M here:
Main Specs
GeForce GTX 660M
Radeon HD 8790M
Power consumption (TDP)
50 Watt
Interface
MXM-B (3.0)
MXM-A (3.0)
Supplementary power connectors
None
Memory type
GDDR5
GDDR5
Maximum RAM amount
2 GB
2 GB
Display Connectors
No outputs
No outputs
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GeForce GTX 660M is connected by MXM-B (3.0), and Radeon HD 8790M uses MXM-A (3.0) interface.
GeForce GTX 660M and Radeon HD 8790M have maximum RAM of 2 GB.
Both cards are used in Laptops.
GeForce GTX 660M is build with Kepler architecture, and Radeon HD 8790M - with GCN.
Core clock speed of Radeon HD 8790M is 15 MHz higher, than GeForce GTX 660M.
GeForce GTX 660M and Radeon HD 8790M are manufactured by 28 nm process technology.
Memory clock speed of Radeon HD 8790M is 2500 MHz higher, than GeForce GTX 660M.
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
3−4
ultra / 1080p
4−5
1−2
QHD / 1440p
0−1
0−1
low / 720p
16−18
14−16
medium / 1080p
8−9
6−7
The average gaming FPS of GeForce GTX 660M in Assassin's Creed Odyssey is 50% more, than Radeon HD 8790M.
high / 1080p
12−14
8−9
ultra / 1080p
10−11
6−7
QHD / 1440p
0−1
0−1
low / 720p
24−27
21−24
medium / 1080p
12−14
9−10
The average gaming FPS of GeForce GTX 660M in Battlefield 5 is 36% more, than Radeon HD 8790M.
low / 768p
45−50
45−50
high / 1080p
45−50
40−45
QHD / 1440p
0−1
0−1
The average gaming FPS of GeForce GTX 660M in Call of Duty: Warzone is 4% more, than Radeon HD 8790M.
low / 768p
130−140
120−130
medium / 768p
110−120
100−110
ultra / 1080p
50−55
50−55
QHD / 1440p
27−30
24−27
4K / 2160p
27−30
−
high / 768p
80−85
75−80
The average gaming FPS of GeForce GTX 660M in Counter-Strike: Global Offensive is 6% more, than Radeon HD 8790M.
low / 768p
55−60
70−75
ultra / 1080p
18−20
21−24
medium / 1080p
45−50
40−45
The average gaming FPS of Radeon HD 8790M in Cyberpunk 2077 is 9% more, than GeForce GTX 660M.
low / 768p
80−85
75−80
medium / 768p
55−60
55−60
ultra / 1080p
30−35
30−35
The average gaming FPS of GeForce GTX 660M in Dota 2 is 3% more, than Radeon HD 8790M.
high / 1080p
8−9
4−5
ultra / 1080p
7−8
4−5
4K / 2160p
3−4
1−2
low / 720p
18−20
14−16
medium / 1080p
8−9
6−7
The average gaming FPS of GeForce GTX 660M in Far Cry 5 is 50% more, than Radeon HD 8790M.
high / 1080p
14−16
12−14
ultra / 1080p
10−11
7−8
QHD / 1440p
−
4−5
low / 720p
60−65
60−65
medium / 1080p
21−24
18−20
The average gaming FPS of GeForce GTX 660M in Fortnite is 8% more, than Radeon HD 8790M.
high / 1080p
12−14
8−9
ultra / 1080p
10−12
7−8
QHD / 1440p
1−2
0−1
low / 720p
24−27
21−24
medium / 1080p
14−16
10−11
The average gaming FPS of GeForce GTX 660M in Forza Horizon 4 is 33% more, than Radeon HD 8790M.
low / 768p
50−55
50−55
medium / 768p
45−50
−
high / 1080p
12−14
10−11
ultra / 1080p
6−7
4−5
QHD / 1440p
0−1
0−1
medium / 720p
−
40−45
The average gaming FPS of GeForce GTX 660M in Grand Theft Auto V is 9% more, than Radeon HD 8790M.
high / 1080p
4−5
2−3
ultra / 1080p
3−4
0−1
4K / 2160p
0−1
0−1
low / 720p
12−14
9−10
medium / 1080p
6−7
4−5
The average gaming FPS of GeForce GTX 660M in Metro Exodus is 60% more, than Radeon HD 8790M.
low / 768p
95−100
85−90
high / 1080p
90−95
70−75
ultra / 1080p
80−85
−
medium / 1080p
90−95
−
The average gaming FPS of GeForce GTX 660M in Minecraft is 18% more, than Radeon HD 8790M.
high / 1080p
16−18
−
ultra / 1080p
14−16
12−14
low / 720p
30−35
30−35
medium / 1080p
18−20
14−16
The average gaming FPS of GeForce GTX 660M in PLAYERUNKNOWN'S BATTLEGROUNDS is 10% more, than Radeon HD 8790M.
high / 1080p
−
7−8
ultra / 1080p
7−8
4−5
QHD / 1440p
0−1
0−1
low / 720p
12−14
8−9
medium / 1080p
10−12
8−9
The average gaming FPS of GeForce GTX 660M in Red Dead Redemption 2 is 42% more, than Radeon HD 8790M.
low / 768p
24−27
20−22
medium / 768p
16−18
12−14
high / 1080p
9−10
7−8
ultra / 1080p
6−7
5−6
4K / 2160p
6−7
1−2
The average gaming FPS of GeForce GTX 660M in The Witcher 3: Wild Hunt is 44% more, than Radeon HD 8790M.
low / 768p
85−90
75−80
medium / 768p
45−50
40−45
ultra / 1080p
18−20
18−20
high / 768p
35−40
30−35
The average gaming FPS of GeForce GTX 660M in World of Tanks is 11% more, than Radeon HD 8790M.
Full Specs
GeForce GTX 660M
Radeon HD 8790M
Architecture
Kepler
GCN
Code name
N13E-GE
Mars XTX
Type
Laptop
Laptop
Release date
22 March 2012
16 November 2012
Pipelines
384
384
Core clock speed
835 MHz
850 MHz
Boost Clock
950 MHz
900 MHz
Transistor count
1,270 million
950 million
Manufacturing process technology
28 nm
28 nm
Texture fill rate
30.4 billion/sec
21.60
Floating-point performance
729.6 gflops
691.2 gflops
Memory bus width
128bit
128 Bit
Memory clock speed
2000 MHz
4500 MHz
Memory bandwidth
64.0 GB/s
64 GB/s
Shared memory
-
-
DirectX
12 API
12 (11_1)
Shader Model
5.1
5.1
OpenGL
4.5
4.6
OpenCL
1.1
1.2
Vulkan
1.1.126
1.2.131
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
80 Mh/s
Laptop size
large
medium sized
Optimus
+
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