GeForce GTX 660 Ti vs Iris Plus Graphics 645
When choosing between GeForce GTX 660 Ti and Iris Plus Graphics 645, it is worth examining the specifications of the models in detail. Do they meet the recommended requirements of modern games and software? Storage capacity, form factor, TDP, available ports, warranty and manufacturer support are all important. For example, the size of a PC case can limit the maximum thickness and length of the card. Often, instead of the factory overclocked card and RGB backlight, it is better to choose a reference model with a more efficient GPU. And make sure that your current power supply unit has the correct connection pins (using adapters is not recommended). This GPUs compare tool is meant to help you to choose the best graphics card for your build. Let's find out the difference between GeForce GTX 660 Ti and Iris Plus Graphics 645.
Iris Plus Graphics 645 is a Laptop Graphics Card
Note: Iris Plus Graphics 645 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 Iris Plus Graphics 645 here:
Main Specs
GeForce GTX 660 Ti
Iris Plus Graphics 645
Power consumption (TDP)
150 Watt
15 Watt
Interface
PCIe 3.0 x16
PCIe 3.0 x1
Supplementary power connectors
Two 6-pin
Memory type
GDDR5
DDR3/DDR4
Maximum RAM amount
2 GB
Display Connectors
2x DVI, 1x HDMI, 1x DisplayPort
No outputs
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GeForce GTX 660 Ti has 900% more power consumption, than Iris Plus Graphics 645.
GeForce GTX 660 Ti is connected by PCIe 3.0 x16, and Iris Plus Graphics 645 uses PCIe 3.0 x1 interface.
GeForce GTX 660 Ti is used in Desktops, and Iris Plus Graphics 645 - in Laptops.
GeForce GTX 660 Ti is build with Kepler architecture, and Iris Plus Graphics 645 - with Gen. 9.5 Coffee Lake.
Core clock speed of GeForce GTX 660 Ti is 615 MHz higher, than Iris Plus Graphics 645.
GeForce GTX 660 Ti is manufactured by 28 nm process technology, and Iris Plus Graphics 645 - by 14 nm process technology.
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
4−5
ultra / 1080p
12−14
2−3
QHD / 1440p
8−9
0−1
4K / 2160p
5−6
−
low / 720p
40−45
12−14
medium / 1080p
27−30
5−6
The average gaming FPS of GeForce GTX 660 Ti in Assassin's Creed Odyssey is 333% more, than Iris Plus Graphics 645.
high / 1080p
35−40
−
ultra / 1080p
30−35
7−8
QHD / 1440p
14−16
0−1
4K / 2160p
9−10
−
low / 720p
70−75
16−18
medium / 1080p
40−45
8−9
The average gaming FPS of GeForce GTX 660 Ti in Battlefield 5 is 345% more, than Iris Plus Graphics 645.
low / 768p
50−55
45−50
high / 1080p
−
45−50
QHD / 1440p
0−1
0−1
The average gaming FPS of GeForce GTX 660 Ti in Call of Duty: Warzone is 10% more, than Iris Plus Graphics 645.
low / 768p
230−240
100−110
medium / 768p
210−220
80−85
ultra / 1080p
120−130
35−40
QHD / 1440p
100−110
24−27
4K / 2160p
55−60
−
high / 768p
170−180
60−65
The average gaming FPS of GeForce GTX 660 Ti in Counter-Strike: Global Offensive is 175% more, than Iris Plus Graphics 645.
low / 768p
60−65
55−60
ultra / 1080p
55−60
12−14
medium / 1080p
55−60
45−50
The average gaming FPS of GeForce GTX 660 Ti in Cyberpunk 2077 is 51% more, than Iris Plus Graphics 645.
low / 768p
120−130
65−70
medium / 768p
110−120
45−50
ultra / 1080p
85−90
21−24
The average gaming FPS of GeForce GTX 660 Ti in Dota 2 is 142% more, than Iris Plus Graphics 645.
high / 1080p
27−30
5−6
ultra / 1080p
24−27
5−6
QHD / 1440p
20−22
−
4K / 2160p
9−10
3−4
low / 720p
55−60
12−14
medium / 1080p
30−33
5−6
The average gaming FPS of GeForce GTX 660 Ti in Far Cry 5 is 400% more, than Iris Plus Graphics 645.
high / 1080p
35−40
12−14
ultra / 1080p
27−30
8−9
QHD / 1440p
16−18
−
low / 720p
130−140
45−50
medium / 1080p
75−80
12−14
The average gaming FPS of GeForce GTX 660 Ti in Fortnite is 245% more, than Iris Plus Graphics 645.
high / 1080p
35−40
8−9
ultra / 1080p
27−30
−
QHD / 1440p
16−18
0−1
4K / 2160p
14−16
−
low / 720p
75−80
16−18
medium / 1080p
40−45
9−10
The average gaming FPS of GeForce GTX 660 Ti in Forza Horizon 4 is 372% more, than Iris Plus Graphics 645.
low / 768p
110−120
40−45
medium / 768p
95−100
35−40
high / 1080p
45−50
7−8
ultra / 1080p
18−20
5−6
QHD / 1440p
9−10
0−1
The average gaming FPS of GeForce GTX 660 Ti in Grand Theft Auto V is 200% more, than Iris Plus Graphics 645.
high / 1080p
14−16
3−4
ultra / 1080p
10−12
2−3
QHD / 1440p
10−12
−
4K / 2160p
3−4
0−1
low / 720p
40−45
7−8
medium / 1080p
20−22
4−5
The average gaming FPS of GeForce GTX 660 Ti in Metro Exodus is 450% more, than Iris Plus Graphics 645.
low / 768p
120−130
85−90
high / 1080p
−
80−85
ultra / 1080p
−
70−75
medium / 1080p
110−120
−
The average gaming FPS of GeForce GTX 660 Ti in Minecraft is 43% more, than Iris Plus Graphics 645.
high / 1080p
−
16−18
ultra / 1080p
14−16
14−16
low / 720p
75−80
24−27
medium / 1080p
18−20
16−18
The average gaming FPS of GeForce GTX 660 Ti in PLAYERUNKNOWN'S BATTLEGROUNDS is 94% more, than Iris Plus Graphics 645.
high / 1080p
16−18
−
ultra / 1080p
10−12
7−8
QHD / 1440p
3−4
0−1
4K / 2160p
2−3
−
low / 720p
40−45
7−8
medium / 1080p
21−24
−
The average gaming FPS of GeForce GTX 660 Ti in Red Dead Redemption 2 is 271% more, than Iris Plus Graphics 645.
low / 768p
80−85
16−18
medium / 768p
50−55
12−14
high / 1080p
27−30
6−7
ultra / 1080p
16−18
5−6
4K / 2160p
9−10
−
The average gaming FPS of GeForce GTX 660 Ti in The Witcher 3: Wild Hunt is 350% more, than Iris Plus Graphics 645.
low / 768p
90−95
80−85
medium / 768p
60−65
35−40
ultra / 1080p
40−45
14−16
high / 768p
55−60
30−33
The average gaming FPS of GeForce GTX 660 Ti in World of Tanks is 53% more, than Iris Plus Graphics 645.
Full Specs
GeForce GTX 660 Ti
Iris Plus Graphics 645
Architecture
Kepler
Gen. 9.5 Coffee Lake
Code name
GK104
Kaby Lake GT3e
Type
Desktop
Laptop
Release date
16 August 2012
10 July 2019
Pipelines
1344
48
Core clock speed
915 MHz
300 MHz
Boost Clock
980 MHz
1150 MHz
Transistor count
3,540 million
Manufacturing process technology
28 nm
14 nm
Texture fill rate
102.5 billion/sec
50.40
Floating-point performance
2,459.5 gflops
Length
9.5" (24.1 cm)
Memory bus width
192-bit GDDR5
Memory clock speed
6.0 GB/s
Memory bandwidth
144.2 GB/s
Shared memory
-
+
DirectX
12 (11_0)
12 (12_1)
Shader Model
5.1
6.4
OpenGL
4.3
4.6
OpenCL
1.2
2.1
Vulkan
1.1.126
1.1.103
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
Quick Sync
+
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