GeForce GTX 660 Ti vs Radeon HD 8790M
If you are going to buy a new graphics card and are choosing between GeForce GTX 660 Ti 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 660 Ti stacks up against Radeon HD 8790M, check out specs charts below.
Radeon HD 8790M is a Laptop Graphics Card
Note: Radeon HD 8790M 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 8790M here:
Main Specs
GeForce GTX 660 Ti
Radeon HD 8790M
Power consumption (TDP)
150 Watt
Interface
PCIe 3.0 x16
MXM-A (3.0)
Supplementary power connectors
Two 6-pin
None
Memory type
GDDR5
GDDR5
Maximum RAM amount
2 GB
2 GB
Display Connectors
2x DVI, 1x HDMI, 1x DisplayPort
No outputs
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GeForce GTX 660 Ti is connected by PCIe 3.0 x16, and Radeon HD 8790M uses MXM-A (3.0) interface.
GeForce GTX 660 Ti and Radeon HD 8790M have maximum RAM of 2 GB.
GeForce GTX 660 Ti is used in Desktops, and Radeon HD 8790M - in Laptops.
GeForce GTX 660 Ti is build with Kepler architecture, and Radeon HD 8790M - with GCN.
Core clock speed of GeForce GTX 660 Ti is 65 MHz higher, than Radeon HD 8790M.
GeForce GTX 660 Ti and Radeon HD 8790M are manufactured by 28 nm process technology.
Memory clock speed of Radeon HD 8790M is 4494 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
3−4
ultra / 1080p
12−14
1−2
QHD / 1440p
8−9
0−1
4K / 2160p
5−6
−
low / 720p
40−45
14−16
medium / 1080p
27−30
6−7
The average gaming FPS of GeForce GTX 660 Ti in Assassin's Creed Odyssey is 333% more, than Radeon HD 8790M.
high / 1080p
35−40
8−9
ultra / 1080p
30−35
6−7
QHD / 1440p
14−16
0−1
4K / 2160p
9−10
−
low / 720p
70−75
21−24
medium / 1080p
40−45
9−10
The average gaming FPS of GeForce GTX 660 Ti in Battlefield 5 is 318% more, than Radeon HD 8790M.
low / 768p
50−55
45−50
high / 1080p
−
40−45
QHD / 1440p
0−1
0−1
The average gaming FPS of GeForce GTX 660 Ti in Call of Duty: Warzone is 10% more, than Radeon HD 8790M.
low / 768p
230−240
120−130
medium / 768p
210−220
100−110
ultra / 1080p
120−130
50−55
QHD / 1440p
100−110
24−27
4K / 2160p
55−60
−
high / 768p
170−180
75−80
The average gaming FPS of GeForce GTX 660 Ti in Counter-Strike: Global Offensive is 122% more, than Radeon HD 8790M.
low / 768p
60−65
70−75
ultra / 1080p
55−60
21−24
medium / 1080p
55−60
40−45
The average gaming FPS of GeForce GTX 660 Ti in Cyberpunk 2077 is 31% more, than Radeon HD 8790M.
low / 768p
120−130
75−80
medium / 768p
110−120
55−60
ultra / 1080p
85−90
30−35
The average gaming FPS of GeForce GTX 660 Ti in Dota 2 is 98% more, than Radeon HD 8790M.
high / 1080p
27−30
4−5
ultra / 1080p
24−27
4−5
QHD / 1440p
20−22
−
4K / 2160p
9−10
1−2
low / 720p
55−60
14−16
medium / 1080p
30−33
6−7
The average gaming FPS of GeForce GTX 660 Ti in Far Cry 5 is 400% more, than Radeon HD 8790M.
high / 1080p
35−40
12−14
ultra / 1080p
27−30
7−8
QHD / 1440p
16−18
4−5
low / 720p
130−140
60−65
medium / 1080p
75−80
18−20
The average gaming FPS of GeForce GTX 660 Ti in Fortnite is 180% more, than Radeon HD 8790M.
high / 1080p
35−40
8−9
ultra / 1080p
27−30
7−8
QHD / 1440p
16−18
0−1
4K / 2160p
14−16
−
low / 720p
75−80
21−24
medium / 1080p
40−45
10−11
The average gaming FPS of GeForce GTX 660 Ti in Forza Horizon 4 is 283% more, than Radeon HD 8790M.
low / 768p
110−120
50−55
medium / 768p
95−100
−
high / 1080p
45−50
10−11
ultra / 1080p
18−20
4−5
QHD / 1440p
9−10
0−1
medium / 720p
−
40−45
The average gaming FPS of GeForce GTX 660 Ti in Grand Theft Auto V is 172% more, than Radeon HD 8790M.
high / 1080p
14−16
2−3
ultra / 1080p
10−12
0−1
QHD / 1440p
10−12
−
4K / 2160p
3−4
0−1
low / 720p
40−45
9−10
medium / 1080p
20−22
4−5
The average gaming FPS of GeForce GTX 660 Ti in Metro Exodus is 420% more, than Radeon HD 8790M.
low / 768p
120−130
85−90
high / 1080p
−
70−75
medium / 1080p
110−120
−
The average gaming FPS of GeForce GTX 660 Ti in Minecraft is 43% more, than Radeon HD 8790M.
ultra / 1080p
14−16
12−14
low / 720p
75−80
30−35
medium / 1080p
18−20
14−16
The average gaming FPS of GeForce GTX 660 Ti in PLAYERUNKNOWN'S BATTLEGROUNDS is 85% more, than Radeon HD 8790M.
high / 1080p
16−18
7−8
ultra / 1080p
10−12
4−5
QHD / 1440p
3−4
0−1
4K / 2160p
2−3
−
low / 720p
40−45
8−9
medium / 1080p
21−24
8−9
The average gaming FPS of GeForce GTX 660 Ti in Red Dead Redemption 2 is 228% more, than Radeon HD 8790M.
low / 768p
80−85
20−22
medium / 768p
50−55
12−14
high / 1080p
27−30
7−8
ultra / 1080p
16−18
5−6
4K / 2160p
9−10
1−2
The average gaming FPS of GeForce GTX 660 Ti in The Witcher 3: Wild Hunt is 322% more, than Radeon HD 8790M.
low / 768p
90−95
75−80
medium / 768p
60−65
40−45
ultra / 1080p
40−45
18−20
high / 768p
55−60
30−35
The average gaming FPS of GeForce GTX 660 Ti in World of Tanks is 50% more, than Radeon HD 8790M.
Full Specs
GeForce GTX 660 Ti
Radeon HD 8790M
Architecture
Kepler
GCN
Code name
GK104
Mars XTX
Type
Desktop
Laptop
Release date
16 August 2012
16 November 2012
Pipelines
1344
384
Core clock speed
915 MHz
850 MHz
Boost Clock
980 MHz
900 MHz
Transistor count
3,540 million
950 million
Manufacturing process technology
28 nm
28 nm
Texture fill rate
102.5 billion/sec
21.60
Floating-point performance
2,459.5 gflops
691.2 gflops
Length
9.5" (24.1 cm)
Memory bus width
192-bit GDDR5
128 Bit
Memory clock speed
6.0 GB/s
4500 MHz
Memory bandwidth
144.2 GB/s
64 GB/s
Shared memory
-
-
DirectX
12 (11_0)
12 (11_1)
Shader Model
5.1
5.1
OpenGL
4.3
4.6
OpenCL
1.2
1.2
Vulkan
1.1.126
1.2.131
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
80 Mh/s
Laptop size
medium sized
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