GeForce GT 755M vs Iris Plus Graphics 640
Aggregated performance score
GeForce GT 755M outperforms Iris Plus Graphics 640 by 13% based on our aggregated benchmark results.
Primary details
GPU architecture, market segment, value for money and other general parameters compared.
| Place in performance ranking | 664 | 630 |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | 0.78 | 0.86 |
| Architecture | Gen. 9.5 Kaby Lake (2015−2017) | Kepler (2012−2018) |
| GPU code name | Kaby Lake GT3e | N14P- |
| Market segment | Laptop | Laptop |
| Release date | 3 January 2017 (7 years ago) | 25 June 2013 (10 years ago) |
| Current price | $669 | $310 |
Cost-effectiveness evaluation
Performance to price ratio. The higher, the better.
GT 755M has 10% better value for money than Iris Plus Graphics 640.
Detailed specifications
General performance parameters such as number of shaders, GPU core base clock and boost clock speeds, manufacturing process, texturing and calculation speed. These parameters indirectly speak of performance, but for precise assessment you have to consider their benchmark and gaming test results. Note that power consumption of some graphics cards can well exceed their nominal TDP, especially when overclocked.
| Pipelines / CUDA cores | 48 | 384 |
| Core clock speed | 300 MHz | 980 MHz |
| Boost clock speed | 1050 MHz | no data |
| Number of transistors | 189 million | 1,270 million |
| Manufacturing process technology | 14 nm | 28 nm |
| Power consumption (TDP) | 15 Watt | 50 Watt |
| Texture fill rate | 52.80 | 31.36 |
| Floating-point performance | no data | 752.6 gflops |
Form factor & compatibility
Information on Iris Plus Graphics 640 and GeForce GT 755M compatibility with other computer components. Useful when choosing a future computer configuration or upgrading an existing one. For notebook video cards it's notebook size, connection slot and bus, if the video card is inserted into a slot instead of being soldered to the notebook motherboard.
| Laptop size | no data | medium sized |
| Bus support | no data | PCI Express 3.0, PCI Express 2.0 |
| Interface | PCIe 3.0 x1 | PCIe 3.0 x16 |
| SLI-ready | no data | - |
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 | GDDR5 |
| Maximum RAM amount | 32 GB | 4 GB |
| Standard memory configuration | no data | GDDR5 |
| Memory bus width | 64/128 Bit | 128 Bit |
| Memory clock speed | System Shared | 5400 MHz |
| Memory bandwidth | no data | 86.4 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 | No outputs | No outputs |
| eDP 1.2 signal support | no data | Up to 3840x2160 |
| LVDS signal support | no data | Up to 1920x1200 |
| VGA аnalog display support | no data | Up to 2048x1536 |
| DisplayPort Multimode (DP++) support | no data | Up to 3840x2160 |
| HDMI | no data | + |
| HDCP content protection | no data | + |
| 7.1 channel HD audio on HDMI | no data | + |
| TrueHD and DTS-HD audio bitstreaming | no data | + |
Supported technologies
Supported technological solutions. This information will prove useful if you need some particular technology for your purposes.
| Blu-Ray 3D Support | no data | + |
| H.264, VC1, MPEG2 1080p video decoder | no data | + |
| Optimus | no data | + |
| 3D Vision / 3DTV Play | no data | + |
| Quick Sync | + | no data |
API compatibility
List of supported graphics and general-purpose computing APIs, including their specific versions.
| DirectX | 12 (12_1) | 12 API |
| Shader Model | 6.4 | 5.1 |
| OpenGL | 4.6 | 4.5 |
| OpenCL | 2.1 | 1.1 |
| Vulkan | 1.1.103 | 1.1.126 |
| CUDA | no data | + |
Synthetic benchmark performance
Non-gaming benchmark performance comparison. The combined score is measured on a 0-100 point scale.
Combined synthetic benchmark score
This is our combined benchmark performance 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.
GeForce GT 755M outperforms Iris Plus Graphics 640 by 13% based on our aggregated benchmark results.
Passmark
This is the most ubiquitous GPU benchmark, part of Passmark PerformanceTest suite. 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.
Benchmark coverage: 25%
GeForce GT 755M outperforms Iris Plus Graphics 640 by 13% in Passmark.
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.
Benchmark coverage: 17%
GeForce GT 755M outperforms Iris Plus Graphics 640 by 18% in 3DMark 11 Performance GPU.
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.
Benchmark coverage: 14%
GeForce GT 755M outperforms Iris Plus Graphics 640 by 51% in 3DMark Fire Strike Graphics.
3DMark Cloud Gate GPU
Cloud Gate is an outdated DirectX 11 feature level 10 benchmark that was used for home PCs and basic notebooks. It displays a few scenes of some weird space teleportation device launching spaceships into unknown, using fixed resolution of 1280x720. Just like Ice Storm benchmark, it has been discontinued in January 2020 and replaced by 3DMark Night Raid.
Benchmark coverage: 14%
GeForce GT 755M outperforms Iris Plus Graphics 640 by 33% in 3DMark Cloud Gate GPU.
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 | 45−50
−24.4%
| 56
+24.4%
|
| Full HD | 22
+0%
| 22
+0%
|
FPS performance in popular games
Full HD
Low Preset
| Cyberpunk 2077 | 7−8
−14.3%
|
8−9
+14.3%
|
Full HD
Medium Preset
| Assassin's Creed Odyssey | 6−7
−33.3%
|
8−9
+33.3%
|
| Assassin's Creed Valhalla | 2−3
−50%
|
3−4
+50%
|
| Battlefield 5 | 10−11
−20%
|
12−14
+20%
|
| Call of Duty: Modern Warfare | 14−16
−7.1%
|
14−16
+7.1%
|
| Cyberpunk 2077 | 7−8
−14.3%
|
8−9
+14.3%
|
| Far Cry 5 | 7−8
−28.6%
|
9−10
+28.6%
|
| Far Cry New Dawn | 7−8
−28.6%
|
9−10
+28.6%
|
| Forza Horizon 4 | 10−12
−18.2%
|
12−14
+18.2%
|
| Hitman 3 | 8−9
−12.5%
|
9−10
+12.5%
|
| Horizon Zero Dawn | 7−8
−14.3%
|
8−9
+14.3%
|
| Red Dead Redemption 2 | 8−9
+0%
|
8−9
+0%
|
| Shadow of the Tomb Raider | 10−12
−9.1%
|
12−14
+9.1%
|
| Watch Dogs: Legion | 4−5
−25%
|
5−6
+25%
|
Full HD
High Preset
| Assassin's Creed Odyssey | 6−7
−33.3%
|
8−9
+33.3%
|
| Assassin's Creed Valhalla | 2−3
−50%
|
3−4
+50%
|
| Battlefield 5 | 10−11
−20%
|
12−14
+20%
|
| Call of Duty: Modern Warfare | 14−16
−7.1%
|
14−16
+7.1%
|
| Cyberpunk 2077 | 7−8
−14.3%
|
8−9
+14.3%
|
| Far Cry 5 | 7−8
−28.6%
|
9−10
+28.6%
|
| Far Cry New Dawn | 7−8
−28.6%
|
9−10
+28.6%
|
| Forza Horizon 4 | 10−12
−18.2%
|
12−14
+18.2%
|
| Hitman 3 | 8−9
−12.5%
|
9−10
+12.5%
|
| Horizon Zero Dawn | 7−8
−14.3%
|
8−9
+14.3%
|
| Metro Exodus | 5−6
−20%
|
6−7
+20%
|
| Red Dead Redemption 2 | 8−9
+0%
|
8−9
+0%
|
| Shadow of the Tomb Raider | 10−12
−9.1%
|
12−14
+9.1%
|
| The Witcher 3: Wild Hunt | 8−9
−12.5%
|
9−10
+12.5%
|
| Watch Dogs: Legion | 4−5
−25%
|
5−6
+25%
|
Full HD
Ultra Preset
| Assassin's Creed Odyssey | 6−7
−33.3%
|
8−9
+33.3%
|
| Assassin's Creed Valhalla | 2−3
−50%
|
3−4
+50%
|
| Battlefield 5 | 10−11
−20%
|
12−14
+20%
|
| Cyberpunk 2077 | 7−8
−14.3%
|
8−9
+14.3%
|
| Far Cry 5 | 7−8
−28.6%
|
9−10
+28.6%
|
| Far Cry New Dawn | 7−8
−28.6%
|
9−10
+28.6%
|
| Forza Horizon 4 | 10−12
−18.2%
|
12−14
+18.2%
|
| The Witcher 3: Wild Hunt | 4
−125%
|
9−10
+125%
|
| Watch Dogs: Legion | 4−5
−25%
|
5−6
+25%
|
1440p
High Preset
| Call of Duty: Modern Warfare | 6−7
−16.7%
|
7−8
+16.7%
|
| Hitman 3 | 7−8
−14.3%
|
8−9
+14.3%
|
| Horizon Zero Dawn | 10−11
−10%
|
10−12
+10%
|
| Metro Exodus | 2−3
+0%
|
2−3
+0%
|
| Red Dead Redemption 2 | 2−3
+0%
|
2−3
+0%
|
| Shadow of the Tomb Raider | 7−8
+0%
|
7−8
+0%
|
1440p
Ultra Preset
| Assassin's Creed Odyssey | 2−3
+0%
|
2−3
+0%
|
| Cyberpunk 2077 | 2−3
+0%
|
2−3
+0%
|
| Far Cry 5 | 6−7
−16.7%
|
7−8
+16.7%
|
| Far Cry New Dawn | 1−2
−200%
|
3−4
+200%
|
| Forza Horizon 4 | 4−5
−25%
|
5−6
+25%
|
| The Witcher 3: Wild Hunt | 4−5
+0%
|
4−5
+0%
|
4K
High Preset
| Call of Duty: Modern Warfare | 3−4
+0%
|
3−4
+0%
|
| Hitman 3 | 4−5
+0%
|
4−5
+0%
|
| Horizon Zero Dawn | 7−8
+0%
|
7−8
+0%
|
| Red Dead Redemption 2 | 2−3
+0%
|
2−3
+0%
|
| Shadow of the Tomb Raider | 0−1 | 1−2 |
4K
Ultra Preset
| Assassin's Creed Odyssey | 2−3
+0%
|
2−3
+0%
|
| Assassin's Creed Valhalla | 1−2
+0%
|
1−2
+0%
|
| Cyberpunk 2077 | 0−1 | 0−1 |
| Far Cry 5 | 4−5
+0%
|
4−5
+0%
|
| Far Cry New Dawn | 6−7
−16.7%
|
7−8
+16.7%
|
| Forza Horizon 4 | 1−2
−100%
|
2−3
+100%
|
This is how Iris Plus Graphics 640 and GT 755M compete in popular games:
- GT 755M is 24.4% faster than Iris Plus Graphics 640 in 900p
- GT 755M is 0% faster than Iris Plus Graphics 640 in 1080p
Here's the range of performance differences observed across popular games:
- in Far Cry New Dawn, with 1440p resolution and the Ultra Preset, the GT 755M is 200% faster than the Iris Plus Graphics 640.
All in all, in popular games:
- GT 755M is ahead in 44 tests (75%)
- there's a draw in 15 tests (25%)
Pros & cons summary
| Performance score | 3.85 | 4.36 |
| Recency | 3 January 2017 | 25 June 2013 |
| Maximum RAM amount | 32 GB | 4 GB |
| Chip lithography | 14 nm | 28 nm |
| Power consumption (TDP) | 15 Watt | 50 Watt |
The GeForce GT 755M is our recommended choice as it beats the Iris Plus Graphics 640 in performance tests.
Should you still have questions concerning choice between the reviewed GPUs, ask them in Comments section, and we shall answer.
Comparisons with similar GPUs
We selected several comparisons of graphics cards with performance close to those reviewed, providing you with more options to consider.
