GeForce RTX 4090 vs Iris Plus Graphics 645

Place in the ranking	665	1
Place by popularity	not in top-100	6
Cost-effectiveness evaluation	no data	18.83
Power efficiency	20.34	15.23
Architecture	Generation 9.5 (2016−2020)	Ada Lovelace (2022−2024)
GPU code name	Coffee Lake GT3e	AD102
Market segment	Laptop	Desktop
Release date	7 October 2019 (5 years ago)	20 September 2022 (2 years ago)
Launch price (MSRP)	no data	$1,599

Cost-effectiveness evaluation

Performance to price ratio. The higher, the better.

no data

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	384	16384
Core clock speed	300 MHz	2235 MHz
Boost clock speed	1050 MHz	2520 MHz
Number of transistors	no data	76,300 million
Manufacturing process technology	14 nm+++	5 nm
Power consumption (TDP)	15 Watt	450 Watt
Texture fill rate	50.40	1,290
Floating-point processing power	0.8064 TFLOPS	82.58 TFLOPS
ROPs	6	176
TMUs	48	512
Tensor Cores	no data	512
Ray Tracing Cores	no data	128

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	PCIe 4.0 x16
Length	no data	304 mm
Width	no data	3-slot
Supplementary power connectors	no data	1x 16-pin

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	System Shared	GDDR6X
Maximum RAM amount	System Shared	24 GB
Memory bus width	System Shared	384 Bit
Memory clock speed	System Shared	1313 MHz
Memory bandwidth	no data	1.01 TB/s
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	1x HDMI 2.1, 3x DisplayPort 1.4a
HDMI	-	+

Supported technologies

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

Quick Sync

no data

API compatibility

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

DirectX	12 (12_1)	12 Ultimate (12_2)
Shader Model	6.4	6.8
OpenGL	4.6	4.6
OpenCL	3.0	3.0
Vulkan	1.3	1.3
CUDA	-	8.9

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.

Iris Plus Graphics 645 4.45

RTX 4090 100.00
+2147%

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.

Iris Plus Graphics 645 1716

RTX 4090 38533
+2146%

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.

Iris Plus Graphics 645 2985

RTX 4090 104598
+3404%

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.

Iris Plus Graphics 645 1893

RTX 4090 73447
+3780%

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	26 −896%	259 +896%
1440p	8−9 −2400%	200 +2400%
4K	6−7 −2283%	143 +2283%

Cost per frame, $

1080p	no data	6.17
1440p	no data	8.00
4K	no data	11.18

FPS performance in popular games

Full HD
Low Preset

Cyberpunk 2077

7−8

−3114%

225
+3114%

Full HD
Medium Preset

Assassin's Creed Odyssey	10−12 −2036%	235 +2036%
Assassin's Creed Valhalla	3−4 −9467%	287 +9467%
Battlefield 5	9−10 −2611%	240−250 +2611%
Call of Duty: Modern Warfare	9−10 −1233%	120−130 +1233%
Cyberpunk 2077	7−8 −3071%	222 +3071%
Far Cry 5	8−9 −1375%	110−120 +1375%
Far Cry New Dawn	10−12 −1727%	200−210 +1727%
Forza Horizon 4	24−27 −1113%	290−300 +1113%
Hitman 3	9−10 −1333%	120−130 +1333%
Horizon Zero Dawn	27−30 −1204%	350−400 +1204%
Metro Exodus	8−9 −1838%	150−160 +1838%
Red Dead Redemption 2	10−11 −1140%	120−130 +1140%
Shadow of the Tomb Raider	14−16 −2980%	450−500 +2980%
Watch Dogs: Legion	40−45 −258%	150−160 +258%

Full HD
High Preset

Assassin's Creed Odyssey	10−12 −1745%	200−210 +1745%
Assassin's Creed Valhalla	3−4 −8167%	248 +8167%
Battlefield 5	9−10 −2611%	240−250 +2611%
Call of Duty: Modern Warfare	9−10 −1233%	120−130 +1233%
Cyberpunk 2077	7−8 −2957%	214 +2957%
Far Cry 5	8−9 −1375%	110−120 +1375%
Far Cry New Dawn	10−12 −1727%	200−210 +1727%
Forza Horizon 4	24−27 −1113%	290−300 +1113%
Hitman 3	9−10 −1333%	120−130 +1333%
Horizon Zero Dawn	27−30 −1204%	350−400 +1204%
Metro Exodus	8−9 −1838%	150−160 +1838%
Red Dead Redemption 2	10−11 −1140%	120−130 +1140%
Shadow of the Tomb Raider	14−16 −3553%	548 +3553%
The Witcher 3: Wild Hunt	16−18 −1406%	240−250 +1406%
Watch Dogs: Legion	40−45 −258%	150−160 +258%

Full HD
Ultra Preset

Assassin's Creed Odyssey	10−12 −1527%	179 +1527%
Assassin's Creed Valhalla	3−4 −7233%	220 +7233%
Call of Duty: Modern Warfare	9−10 −1233%	120−130 +1233%
Cyberpunk 2077	7−8 −2900%	210 +2900%
Far Cry 5	8−9 −1375%	110−120 +1375%
Forza Horizon 4	24−27 −1113%	290−300 +1113%
Hitman 3	9−10 −1333%	120−130 +1333%
Horizon Zero Dawn	27−30 −1359%	394 +1359%
Shadow of the Tomb Raider	14−16 −3507%	541 +3507%
The Witcher 3: Wild Hunt	16−18 −1806%	305 +1806%
Watch Dogs: Legion	40−45 −256%	153 +256%

Full HD
Epic Preset

Red Dead Redemption 2

10−11

−1140%

120−130
+1140%

1440p
High Preset

Battlefield 5	7−8 −2271%	160−170 +2271%
Far Cry New Dawn	6−7 −1767%	110−120 +1767%

1440p
Ultra Preset

Assassin's Creed Odyssey	4−5 −3775%	155 +3775%
Call of Duty: Modern Warfare	3−4 −2633%	80−85 +2633%
Cyberpunk 2077	2−3 −7600%	154 +7600%
Far Cry 5	5−6 −1580%	80−85 +1580%
Forza Horizon 4	4−5 −6675%	270−280 +6675%
Hitman 3	8−9 −1625%	130−140 +1625%
Horizon Zero Dawn	9−10 −4211%	388 +4211%
The Witcher 3: Wild Hunt	3−4 −8833%	268 +8833%
Watch Dogs: Legion	24−27 −860%	240−250 +860%

1440p
Epic Preset

Red Dead Redemption 2

8−9

−1513%

120−130
+1513%

4K
High Preset

Battlefield 5	2−3 −4300%	85−90 +4300%
Far Cry New Dawn	2−3 −3350%	65−70 +3350%
Hitman 3	0−1	80−85
Metro Exodus	0−1	140−150

4K
Ultra Preset

Assassin's Creed Odyssey	3−4 −3900%	120 +3900%
Assassin's Creed Valhalla	2−3 −5900%	120 +5900%
Call of Duty: Modern Warfare	1−2 −5100%	50−55 +5100%
Cyberpunk 2077	0−1	80
Far Cry 5	2−3 −2400%	50−55 +2400%
Forza Horizon 4	2−3 −12700%	250−260 +12700%
Watch Dogs: Legion	1−2 −11600%	117 +11600%

4K
Epic Preset

Red Dead Redemption 2

5−6

−2120%

110−120
+2120%

1440p
Ultra Preset

Assassin's Creed Valhalla	183 +0%	183 +0%
Metro Exodus	152 +0%	152 +0%
Shadow of the Tomb Raider	504 +0%	504 +0%

4K
High Preset

Horizon Zero Dawn	105 +0%	105 +0%
The Witcher 3: Wild Hunt	281 +0%	281 +0%

4K
Ultra Preset

Shadow of the Tomb Raider

282

+0%

282

+0%

This is how Iris Plus Graphics 645 and RTX 4090 compete in popular games:

RTX 4090 is 896% faster in 1080p
RTX 4090 is 2400% faster in 1440p
RTX 4090 is 2283% faster in 4K

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

in Forza Horizon 4, with 4K resolution and the Ultra Preset, the RTX 4090 is 12700% faster.

All in all, in popular games:

RTX 4090 is ahead in 63 tests (91%)
there's a draw in 6 tests (9%)

Pros & cons summary

Performance score	4.45	100.00
Recency	7 October 2019	20 September 2022
Chip lithography	14 nm	5 nm
Power consumption (TDP)	15 Watt	450 Watt

Iris Plus Graphics 645 has 2900% lower power consumption.

RTX 4090, on the other hand, has a 2147.2% higher aggregate performance score, an age advantage of 2 years, and a 180% more advanced lithography process.

The GeForce RTX 4090 is our recommended choice as it beats the Iris Plus Graphics 645 in performance tests.

Be aware that Iris Plus Graphics 645 is a notebook card while GeForce RTX 4090 is a desktop one.

Should you still have questions concerning choice between the reviewed GPUs, ask them in Comments section, and we shall answer.