GeForce GT 640 vs Iris Graphics 550
If you are going to buy a new graphics card and are choosing between GeForce GT 640 and Iris Graphics 550, 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 GT 640 stacks up against Iris Graphics 550, check out specs charts below.
Iris Graphics 550 is a Laptop Graphics Card
Note: Iris Graphics 550 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 Graphics 550 here:
Main Specs
GeForce GT 640
Iris Graphics 550
Power consumption (TDP)
65 Watt
15 Watt
Interface
PCIe 3.0 x16
PCIe 3.0 x1
Supplementary power connectors
None
Memory type
DDR3
eDRAM
Maximum RAM amount
2 GB
64 MB
Display Connectors
1x DVI, 1x HDMI, 1x DisplayPort
No outputs
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GeForce GT 640 has 333% more power consumption, than Iris Graphics 550.
GeForce GT 640 is connected by PCIe 3.0 x16, and Iris Graphics 550 uses PCIe 3.0 x1 interface.
Iris Graphics 550 has 62 GB more memory, than GeForce GT 640.
GeForce GT 640 is used in Desktops, and Iris Graphics 550 - in Laptops.
GeForce GT 640 is build with Kepler architecture, and Iris Graphics 550 - with Gen. 9 Skylake.
Core clock speed of GeForce GT 640 is 602 MHz higher, than Iris Graphics 550.
GeForce GT 640 is manufactured by 28 nm process technology, and Iris Graphics 550 - 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
2−3
9−10
ultra / 1080p
1−2
5−6
QHD / 1440p
0−1
0−1
low / 720p
14−16
21−24
medium / 1080p
5−6
10−12
The average gaming FPS of Iris Graphics 550 in Assassin's Creed Odyssey is 100% more, than GeForce GT 640.
high / 1080p
7−8
14−16
ultra / 1080p
5−6
12−14
QHD / 1440p
0−1
0−1
low / 720p
20−22
30−35
medium / 1080p
7−8
16−18
The average gaming FPS of Iris Graphics 550 in Battlefield 5 is 90% more, than GeForce GT 640.
low / 768p
50−55
45−50
high / 1080p
35−40
−
QHD / 1440p
0−1
0−1
The average gaming FPS of GeForce GT 640 in Call of Duty: Warzone is 10% more, than Iris Graphics 550.
low / 768p
110−120
160−170
medium / 768p
90−95
130−140
ultra / 1080p
45−50
65−70
QHD / 1440p
24−27
35−40
4K / 2160p
18−20
27−30
high / 768p
65−70
100−110
The average gaming FPS of Iris Graphics 550 in Counter-Strike: Global Offensive is 45% more, than GeForce GT 640.
low / 768p
70−75
55−60
ultra / 1080p
21−24
24−27
medium / 1080p
45−50
45−50
The average gaming FPS of GeForce GT 640 in Cyberpunk 2077 is 9% more, than Iris Graphics 550.
low / 768p
70−75
90−95
medium / 768p
50−55
70−75
ultra / 1080p
27−30
40−45
The average gaming FPS of Iris Graphics 550 in Dota 2 is 35% more, than GeForce GT 640.
high / 1080p
3−4
10−12
ultra / 1080p
3−4
10−11
4K / 2160p
2−3
4−5
low / 720p
14−16
24−27
medium / 1080p
4−5
12−14
The average gaming FPS of Iris Graphics 550 in Far Cry 5 is 140% more, than GeForce GT 640.
high / 1080p
10−12
18−20
ultra / 1080p
5−6
12−14
QHD / 1440p
2−3
−
low / 720p
50−55
70−75
medium / 1080p
16−18
30−35
The average gaming FPS of Iris Graphics 550 in Fortnite is 61% more, than GeForce GT 640.
high / 1080p
6−7
16−18
ultra / 1080p
−
14−16
QHD / 1440p
4−5
3−4
4K / 2160p
2−3
−
low / 720p
21−24
30−35
medium / 1080p
9−10
18−20
The average gaming FPS of Iris Graphics 550 in Forza Horizon 4 is 80% more, than GeForce GT 640.
low / 768p
45−50
60−65
medium / 768p
−
55−60
high / 1080p
7−8
18−20
ultra / 1080p
3−4
8−9
QHD / 1440p
0−1
0−1
medium / 720p
40−45
−
The average gaming FPS of Iris Graphics 550 in Grand Theft Auto V is 57% more, than GeForce GT 640.
high / 1080p
2−3
6−7
ultra / 1080p
0−1
4−5
4K / 2160p
0−1
1−2
low / 720p
8−9
18−20
medium / 1080p
4−5
8−9
The average gaming FPS of Iris Graphics 550 in Metro Exodus is 120% more, than GeForce GT 640.
low / 768p
80−85
100−110
high / 1080p
−
95−100
ultra / 1080p
70−75
85−90
medium / 1080p
−
95−100
The average gaming FPS of Iris Graphics 550 in Minecraft is 24% more, than GeForce GT 640.
high / 1080p
−
18−20
ultra / 1080p
12−14
14−16
low / 720p
27−30
40−45
medium / 1080p
14−16
18−20
The average gaming FPS of Iris Graphics 550 in PLAYERUNKNOWN'S BATTLEGROUNDS is 38% more, than GeForce GT 640.
high / 1080p
6−7
12−14
ultra / 1080p
4−5
8−9
QHD / 1440p
0−1
0−1
low / 720p
7−8
16−18
medium / 1080p
−
12−14
The average gaming FPS of Iris Graphics 550 in Red Dead Redemption 2 is 100% more, than GeForce GT 640.
low / 768p
14−16
30−35
medium / 768p
10−11
21−24
high / 1080p
5−6
12−14
ultra / 1080p
4−5
7−8
4K / 2160p
0−1
7−8
The average gaming FPS of Iris Graphics 550 in The Witcher 3: Wild Hunt is 125% more, than GeForce GT 640.
low / 768p
70−75
90−95
medium / 768p
35−40
50−55
ultra / 1080p
16−18
24−27
high / 768p
30−35
40−45
The average gaming FPS of Iris Graphics 550 in World of Tanks is 35% more, than GeForce GT 640.
Full Specs
GeForce GT 640
Iris Graphics 550
Architecture
Kepler
Gen. 9 Skylake
Code name
GK107
Skylake GT3e
Type
Desktop
Laptop
Release date
5 June 2012
1 September 2015
Pipelines
384
48
Core clock speed
902 MHz
300 MHz
Boost Clock
1100 MHz
Transistor count
1,270 million
189 million
Manufacturing process technology
28 nm
14 nm
Texture fill rate
28.86
52.80
Floating-point performance
692.7 gflops
Length
145 mm
Memory bus width
128 Bit
Memory clock speed
1782 MHz
Memory bandwidth
28.51 GB/s
Shared memory
+
DirectX
12 (11_0)
12 (12_1)
Shader Model
5.1
6.4
OpenGL
4.6
4.6
OpenCL
1.2
2.1
Vulkan
1.1.126
1.1.97
CUDA
3.0
Bitcoin / BTC (SHA256)
24 Mh/s
Quick Sync
+
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