GeForce 840M vs Iris Pro Graphics P580

Place in the ranking	614	791
Place by popularity	not in top-100	not in top-100
Power efficiency	24.35	5.98
Architecture	Generation 9.0 (2015−2016)	Maxwell (2014−2017)
GPU code name	Skylake GT4e	GM108
Market segment	Laptop	Laptop
Release date	1 September 2015 (9 years ago)	12 March 2014 (10 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	576	384
Core clock speed	350 MHz	1029 MHz
Boost clock speed	1050 MHz	1124 MHz
Number of transistors	189 million	no data
Manufacturing process technology	14 nm+	28 nm
Power consumption (TDP)	15 Watt	33 Watt
Texture fill rate	75.60	17.98
Floating-point processing power	1.21 TFLOPS	0.8632 TFLOPS
ROPs	9	8
TMUs	72	16

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).

Laptop size	no data	medium sized
Bus support	no data	PCI Express 2.0, PCI Express 3.0
Interface	Ring Bus	PCIe 3.0 x8

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	DDR3L/LPDDR3/DDR4	DDR3
Maximum RAM amount	64 GB	4 GB
Memory bus width	System Shared	64 Bit
Memory clock speed	System Shared	1001 MHz
Memory bandwidth	no data	16.02 GB/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

No outputs

Supported technologies

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

GPU Boost	no data	2.0
Optimus	-	+
GameWorks	-	+
Quick Sync	+	no data

API compatibility

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

DirectX	12 (12_1)	12 (11_0)
Shader Model	6.4	5.1
OpenGL	4.6	4.5
OpenCL	3.0	1.2
Vulkan	1.3	1.1.126
CUDA	-	+

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 Pro Graphics P580 5.24
+85.2%

GeForce 840M 2.83

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 Pro Graphics P580 2020
+85%

GeForce 840M 1092

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:

900p	80−85 +77.8%	45 −77.8%
Full HD	30−35 +66.7%	18 −66.7%

FPS performance in popular games

Full HD
Low Preset

Cyberpunk 2077

9−10
+80%

5−6

−80%

Full HD
Medium Preset

Assassin's Creed Odyssey	14−16 +55.6%	9−10 −55.6%
Assassin's Creed Valhalla	6−7 +500%	1−2 −500%
Battlefield 5	14−16 +250%	4−5 −250%
Call of Duty: Modern Warfare	10−12 +57.1%	7−8 −57.1%
Cyberpunk 2077	9−10 +80%	5−6 −80%
Far Cry 5	10−12 +120%	5−6 −120%
Far Cry New Dawn	14−16 +87.5%	8−9 −87.5%
Forza Horizon 4	30−35 +120%	14−16 −120%
Hitman 3	10−12 +37.5%	8−9 −37.5%
Horizon Zero Dawn	30−35 +50%	21−24 −50%
Metro Exodus	12−14 +333%	3−4 −333%
Red Dead Redemption 2	14−16 +100%	7−8 −100%
Shadow of the Tomb Raider	18−20 +58.3%	12−14 −58.3%
Watch Dogs: Legion	45−50 +23.7%	35−40 −23.7%

Full HD
High Preset

Assassin's Creed Odyssey	14−16 +55.6%	9−10 −55.6%
Assassin's Creed Valhalla	6−7 +500%	1−2 −500%
Battlefield 5	14−16 +250%	4−5 −250%
Call of Duty: Modern Warfare	10−12 +57.1%	7−8 −57.1%
Cyberpunk 2077	9−10 +80%	5−6 −80%
Far Cry 5	10−12 +120%	5−6 −120%
Far Cry New Dawn	14−16 +87.5%	8−9 −87.5%
Forza Horizon 4	30−35 +120%	14−16 −120%
Hitman 3	10−12 +37.5%	8−9 −37.5%
Horizon Zero Dawn	30−35 +50%	21−24 −50%
Metro Exodus	12−14 +333%	3−4 −333%
Red Dead Redemption 2	14−16 +100%	7−8 −100%
Shadow of the Tomb Raider	18−20 +58.3%	12−14 −58.3%
The Witcher 3: Wild Hunt	18−20 −27.8%	23 +27.8%
Watch Dogs: Legion	45−50 +23.7%	35−40 −23.7%

Full HD
Ultra Preset

Assassin's Creed Odyssey	14−16 +55.6%	9−10 −55.6%
Assassin's Creed Valhalla	6−7 +500%	1−2 −500%
Call of Duty: Modern Warfare	10−12 +57.1%	7−8 −57.1%
Cyberpunk 2077	9−10 +80%	5−6 −80%
Far Cry 5	10−12 +120%	5−6 −120%
Forza Horizon 4	30−35 +120%	14−16 −120%
Hitman 3	10−12 +37.5%	8−9 −37.5%
Horizon Zero Dawn	30−35 +50%	21−24 −50%
Shadow of the Tomb Raider	18−20 +58.3%	12−14 −58.3%
The Witcher 3: Wild Hunt	18−20 +200%	6 −200%
Watch Dogs: Legion	45−50 +23.7%	35−40 −23.7%

Full HD
Epic Preset

Red Dead Redemption 2

14−16
+100%

7−8

−100%

1440p
High Preset

Battlefield 5	10−11 +100%	5−6 −100%
Far Cry New Dawn	8−9 +100%	4−5 −100%

1440p
Ultra Preset

Assassin's Creed Odyssey	5−6 +150%	2−3 −150%
Assassin's Creed Valhalla	0−1	0−1
Call of Duty: Modern Warfare	5−6 +150%	2−3 −150%
Cyberpunk 2077	2−3 +100%	1−2 −100%
Far Cry 5	6−7 +100%	3−4 −100%
Forza Horizon 4	12−14 +85.7%	7−8 −85.7%
Hitman 3	9−10 +12.5%	8−9 −12.5%
Horizon Zero Dawn	12−14 +71.4%	7−8 −71.4%
Metro Exodus	3−4 +200%	1−2 −200%
The Witcher 3: Wild Hunt	4−5 +100%	2−3 −100%
Watch Dogs: Legion	30−35 +94.1%	16−18 −94.1%

1440p
Epic Preset

Red Dead Redemption 2

9−10
+50%

6−7

−50%

4K
High Preset

Battlefield 5	4−5 +300%	1−2 −300%
Far Cry New Dawn	3−4 +50%	2−3 −50%
Hitman 3	1−2	0−1
Horizon Zero Dawn	9−10 +125%	4−5 −125%
Metro Exodus	2−3 +100%	1−2 −100%
The Witcher 3: Wild Hunt	1−2	0−1

4K
Ultra Preset

Assassin's Creed Odyssey	3−4 +50%	2−3 −50%
Assassin's Creed Valhalla	2−3 +100%	1−2 −100%
Call of Duty: Modern Warfare	2−3 +100%	1−2 −100%
Cyberpunk 2077	0−1	0−1
Far Cry 5	3−4 +200%	1−2 −200%
Forza Horizon 4	4−5	0−1
Watch Dogs: Legion	2−3 +100%	1−2 −100%

4K
Epic Preset

Red Dead Redemption 2

6−7
+50%

4−5

−50%

This is how Iris Pro Graphics P580 and GeForce 840M compete in popular games:

Iris Pro Graphics P580 is 78% faster in 900p
Iris Pro Graphics P580 is 67% faster in 1080p

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

in Assassin's Creed Valhalla, with 1080p resolution and the Medium Preset, the Iris Pro Graphics P580 is 500% faster.
in The Witcher 3: Wild Hunt, with 1080p resolution and the High Preset, the GeForce 840M is 28% faster.

All in all, in popular games:

Iris Pro Graphics P580 is ahead in 60 tests (98%)
GeForce 840M is ahead in 1 test (2%)

Pros & cons summary

Performance score	5.24	2.83
Recency	1 September 2015	12 March 2014
Maximum RAM amount	64 GB	4 GB
Chip lithography	14 nm	28 nm
Power consumption (TDP)	15 Watt	33 Watt

Iris Pro Graphics P580 has a 85.2% higher aggregate performance score, an age advantage of 1 year, a 1500% higher maximum VRAM amount, a 100% more advanced lithography process, and 120% lower power consumption.

The Iris Pro Graphics P580 is our recommended choice as it beats the GeForce 840M in performance tests.

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