Iris Plus Graphics 645 vs UHD Graphics 620

Place in the ranking	810	665
Place by popularity	27	not in top-100
Power efficiency	12.20	20.34
Architecture	Generation 9.5 (2016−2020)	Generation 9.5 (2016−2020)
GPU code name	Kaby Lake GT2	Coffee Lake GT3e
Market segment	Laptop	Laptop
Release date	1 September 2017 (7 years ago)	7 October 2019 (5 years ago)

Detailed specifications

General parameters such as number of shaders, GPU core base clock and boost clock speeds, manufacturing process, texturing and calculation speed. Note that power consumption of some graphics cards can well exceed their nominal TDP, especially when overclocked.

Pipelines / CUDA cores	192	384
Core clock speed	300 MHz	300 MHz
Boost clock speed	1000 MHz	1050 MHz
Number of transistors	189 million	no data
Manufacturing process technology	14 nm++	14 nm+++
Power consumption (TDP)	15 Watt	15 Watt
Texture fill rate	24.00	50.40
Floating-point processing power	0.384 TFLOPS	0.8064 TFLOPS
ROPs	3	6
TMUs	24	48

Form factor & compatibility

Information on compatibility with other computer components. Useful when choosing a future computer configuration or upgrading an existing one. For desktop graphics cards it's interface and bus (motherboard compatibility), additional power connectors (power supply compatibility).

Interface

Ring Bus

VRAM capacity and type

Parameters of VRAM installed: its type, size, bus, clock and resulting bandwidth. Integrated GPUs have no dedicated video RAM and use a shared part of system RAM.

Memory type	LPDDR3/DDR4	System Shared
Maximum RAM amount	32 GB	System Shared
Memory bus width	System Shared	System Shared
Memory clock speed	System Shared	System Shared
Shared memory	+	+

Connectivity and outputs

Types and number of video connectors present on the reviewed GPUs. As a rule, data in this section is precise only for desktop reference ones (so-called Founders Edition for NVIDIA chips). OEM manufacturers may change the number and type of output ports, while for notebook cards availability of certain video outputs ports depends on the laptop model rather than on the card itself.

Display Connectors

Portable Device Dependent

Supported technologies

Supported technological solutions. This information will prove useful if you need some particular technology for your purposes.

Quick Sync

API compatibility

List of supported 3D and general-purpose computing APIs, including their specific versions.

DirectX	12 (12_1)	12 (12_1)
Shader Model	6.4	6.4
OpenGL	4.6	4.6
OpenCL	3.0	3.0
Vulkan	1.3	1.3

Synthetic benchmark performance

Non-gaming benchmark results comparison. The combined score is measured on a 0-100 point scale.

Combined synthetic benchmark score

This is our combined benchmark score. We are regularly improving our combining algorithms, but if you find some perceived inconsistencies, feel free to speak up in comments section, we usually fix problems quickly.

UHD Graphics 620 2.67

Iris Plus Graphics 645 4.45
+66.7%

Passmark

This is the most ubiquitous GPU benchmark. It gives the graphics card a thorough evaluation under various types of load, providing four separate benchmarks for Direct3D versions 9, 10, 11 and 12 (the last being done in 4K resolution if possible), and few more tests engaging DirectCompute capabilities.

UHD Graphics 620 1030

Iris Plus Graphics 645 1716
+66.6%

3DMark 11 Performance GPU

3DMark 11 is an obsolete DirectX 11 benchmark by Futuremark. It used four tests based on two scenes, one being few submarines exploring the submerged wreck of a sunken ship, the other is an abandoned temple deep in the jungle. All the tests are heavy with volumetric lighting and tessellation, and despite being done in 1280x720 resolution, are relatively taxing. Discontinued in January 2020, 3DMark 11 is now superseded by Time Spy.

UHD Graphics 620 1744

Iris Plus Graphics 645 2985
+71.2%

3DMark Fire Strike Graphics

Fire Strike is a DirectX 11 benchmark for gaming PCs. It features two separate tests displaying a fight between a humanoid and a fiery creature made of lava. Using 1920x1080 resolution, Fire Strike shows off some realistic graphics and is quite taxing on hardware.

UHD Graphics 620 1168

Iris Plus Graphics 645 1893
+62.1%

3DMark Time Spy Graphics

UHD Graphics 620 380

Iris Plus Graphics 645 550
+44.7%

Gaming performance

Let's see how good the compared graphics cards are for gaming. Particular gaming benchmark results are measured in FPS.

Average FPS across all PC games

Here are the average frames per second in a large set of popular games across different resolutions:

Full HD	13 −100%	26 +100%
1440p	15 −60%	24−27 +60%
4K	7 −42.9%	10−12 +42.9%

FPS performance in popular games

Full HD
Low Preset

Cyberpunk 2077

−16.7%

7−8
+16.7%

Full HD
Medium Preset

Assassin's Creed Odyssey	8 −37.5%	10−12 +37.5%
Assassin's Creed Valhalla	0−1	3−4
Battlefield 5	8 −12.5%	9−10 +12.5%
Call of Duty: Modern Warfare	6 −50%	9−10 +50%
Cyberpunk 2077	5−6 −40%	7−8 +40%
Far Cry 5	5−6 −60%	8−9 +60%
Far Cry New Dawn	10 −10%	10−12 +10%
Forza Horizon 4	38 +58.3%	24−27 −58.3%
Hitman 3	7−8 −28.6%	9−10 +28.6%
Horizon Zero Dawn	40 +48.1%	27−30 −48.1%
Metro Exodus	2−3 −300%	8−9 +300%
Red Dead Redemption 2	9 −11.1%	10−11 +11.1%
Shadow of the Tomb Raider	15 +0%	14−16 +0%
Watch Dogs: Legion	30 −43.3%	40−45 +43.3%

Full HD
High Preset

Assassin's Creed Odyssey	9−10 −22.2%	10−12 +22.2%
Assassin's Creed Valhalla	0−1	3−4
Battlefield 5	4−5 −125%	9−10 +125%
Call of Duty: Modern Warfare	7−8 −28.6%	9−10 +28.6%
Cyberpunk 2077	5−6 −40%	7−8 +40%
Far Cry 5	5−6 −60%	8−9 +60%
Far Cry New Dawn	7−8 −57.1%	10−12 +57.1%
Forza Horizon 4	36 +50%	24−27 −50%
Hitman 3	7−8 −28.6%	9−10 +28.6%
Horizon Zero Dawn	34 +25.9%	27−30 −25.9%
Metro Exodus	2−3 −300%	8−9 +300%
Red Dead Redemption 2	6−7 −66.7%	10−11 +66.7%
Shadow of the Tomb Raider	11 −36.4%	14−16 +36.4%
The Witcher 3: Wild Hunt	14 −14.3%	16−18 +14.3%
Watch Dogs: Legion	35−40 −13.2%	40−45 +13.2%

Full HD
Ultra Preset

Assassin's Creed Odyssey	9−10 −22.2%	10−12 +22.2%
Assassin's Creed Valhalla	0−1	3−4
Call of Duty: Modern Warfare	7−8 −28.6%	9−10 +28.6%
Cyberpunk 2077	5−6 −40%	7−8 +40%
Far Cry 5	5−6 −60%	8−9 +60%
Forza Horizon 4	12−14 −84.6%	24−27 +84.6%
Hitman 3	7−8 −28.6%	9−10 +28.6%
Horizon Zero Dawn	5 −440%	27−30 +440%
Shadow of the Tomb Raider	14 −7.1%	14−16 +7.1%
The Witcher 3: Wild Hunt	3 −433%	16−18 +433%
Watch Dogs: Legion	35−40 −13.2%	40−45 +13.2%

Full HD
Epic Preset

Red Dead Redemption 2

6−7

−66.7%

10−11
+66.7%

1440p
High Preset

Battlefield 5	4−5 −75%	7−8 +75%
Far Cry New Dawn	4−5 −50%	6−7 +50%

1440p
Ultra Preset

Assassin's Creed Odyssey	2−3 −100%	4−5 +100%
Call of Duty: Modern Warfare	2−3 −50%	3−4 +50%
Cyberpunk 2077	1−2 −100%	2−3 +100%
Far Cry 5	3−4 −66.7%	5−6 +66.7%
Hitman 3	8−9 +0%	8−9 +0%
Horizon Zero Dawn	7−8 −28.6%	9−10 +28.6%
The Witcher 3: Wild Hunt	2−3 −50%	3−4 +50%
Watch Dogs: Legion	16−18 −56.3%	24−27 +56.3%

1440p
Epic Preset

Red Dead Redemption 2

6−7

−33.3%

8−9
+33.3%

4K
High Preset

Battlefield 5	1−2 −100%	2−3 +100%
Far Cry New Dawn	1−2 −100%	2−3 +100%

4K
Ultra Preset

Assassin's Creed Odyssey	2−3 −50%	3−4 +50%
Assassin's Creed Valhalla	1−2 −100%	2−3 +100%
Call of Duty: Modern Warfare	1−2 +0%	1−2 +0%
Far Cry 5	1−2 −100%	2−3 +100%
Watch Dogs: Legion	0−1	1−2

4K
Epic Preset

Red Dead Redemption 2

4−5

−25%

5−6
+25%

1440p
Ultra Preset

Forza Horizon 4

4−5

+0%

4−5

+0%

4K
High Preset

Hitman 3	0−1	0−1
Metro Exodus	0−1	0−1

4K
Ultra Preset

Cyberpunk 2077	0−1	0−1
Forza Horizon 4	2−3 +0%	2−3 +0%

This is how UHD Graphics 620 and Iris Plus Graphics 645 compete in popular games:

Iris Plus Graphics 645 is 100% faster in 1080p
Iris Plus Graphics 645 is 60% faster in 1440p
Iris Plus Graphics 645 is 43% faster in 4K

Here's the range of performance differences observed across popular games:

in Forza Horizon 4, with 1080p resolution and the Medium Preset, the UHD Graphics 620 is 58% faster.
in Horizon Zero Dawn, with 1080p resolution and the Ultra Preset, the Iris Plus Graphics 645 is 440% faster.

All in all, in popular games: