GeForce GT 640 vs Iris Graphics 540
Aggregated performance score
Primary Details
GPU architecture, market segment, value for money and other general parameters compared.
| Place in performance ranking | 728 | 726 |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-Effectiveness Evaluation | 0.12 | 0.20 |
| Architecture | Gen. 9 Skylake (2015−2016) | Kepler (2012−2018) |
| GPU code name | Skylake GT3e | GK107 |
| Market segment | Laptop | Desktop |
| Release date | 1 September 2015 (8 years ago) | 5 June 2012 (11 years ago) |
| Launch price (MSRP) | no data | $99 |
| Current price | $1043 | $157 (1.6x MSRP) |
Cost-Effectiveness Evaluation
Performance to price ratio. The higher, the better.
GT 640 has 67% better value for money than Iris Graphics 540.
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 | 902 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 | 65 Watt |
| Texture fill rate | 50.40 | 28.86 |
| Floating-point performance | no data | 692.7 gflops |
Form Factor & Compatibility
Information on Iris Graphics 540 and GeForce GT 640 compatibility with other computer components. Useful when choosing a future computer configuration or upgrading an existing one. For desktop video cards it's interface and bus (motherboard compatibility), additional power connectors (power supply compatibility). 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.
| Interface | PCIe 3.0 x1 | PCIe 3.0 x16 |
| Length | no data | 145 mm |
| Width | no data | 1-slot |
| Supplementary power connectors | no data | None |
| Memory type | eDRAM | DDR3 |
| Maximum RAM amount | 64 MB | 2 GB |
| Memory bus width | eDRAM + 64/128 Bit | 128 Bit |
| Memory clock speed | System Shared | 1782 MHz |
| Memory bandwidth | no data | 28.51 GB/s |
| Shared memory | + | no data |
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 | 1x DVI, 1x HDMI, 1x DisplayPort |
| HDMI | no data | + |
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 graphics 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 | 4.6 |
| OpenCL | 2.1 | 1.2 |
| Vulkan | 1.1.97 | 1.1.126 |
| CUDA | no data | 3.0 |
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.
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%
Iris Graphics 540 outperforms GeForce GT 640 by 7% in Passmark.
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 640 outperforms Iris Graphics 540 by 8% in 3DMark Fire Strike Graphics.
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 | 23
+9.5%
| 21−24
−9.5%
|
FPS performance in popular games
Full HD
Low Preset
| Cyberpunk 2077 | 6−7
+0%
|
6−7
+0%
|
Full HD
Medium Preset
| Assassin's Creed Odyssey | 4−5
+0%
|
4−5
+0%
|
| Battlefield 5 | 7−8
+0%
|
7−8
+0%
|
| Call of Duty: Modern Warfare | 12−14
+0%
|
12−14
+0%
|
| Cyberpunk 2077 | 6−7
+0%
|
6−7
+0%
|
| Far Cry 5 | 5−6
+0%
|
5−6
+0%
|
| Far Cry New Dawn | 4−5
+0%
|
4−5
+0%
|
| Forza Horizon 4 | 8−9
+0%
|
8−9
+0%
|
| Hitman 3 | 6−7
+0%
|
6−7
+0%
|
| Horizon Zero Dawn | 5−6
+0%
|
5−6
+0%
|
| Red Dead Redemption 2 | 6−7
+0%
|
6−7
+0%
|
| Shadow of the Tomb Raider | 9−10
+0%
|
9−10
+0%
|
| Watch Dogs: Legion | 2−3
+0%
|
2−3
+0%
|
Full HD
High Preset
| Assassin's Creed Odyssey | 4−5
+0%
|
4−5
+0%
|
| Battlefield 5 | 7−8
+0%
|
7−8
+0%
|
| Call of Duty: Modern Warfare | 12−14
+0%
|
12−14
+0%
|
| Cyberpunk 2077 | 6−7
+0%
|
6−7
+0%
|
| Far Cry 5 | 5−6
+0%
|
5−6
+0%
|
| Far Cry New Dawn | 4−5
+0%
|
4−5
+0%
|
| Forza Horizon 4 | 8−9
+0%
|
8−9
+0%
|
| Hitman 3 | 6−7
+0%
|
6−7
+0%
|
| Horizon Zero Dawn | 5−6
+0%
|
5−6
+0%
|
| Metro Exodus | 4−5
+0%
|
4−5
+0%
|
| Red Dead Redemption 2 | 6−7
+0%
|
6−7
+0%
|
| Shadow of the Tomb Raider | 9−10
+0%
|
9−10
+0%
|
| The Witcher 3: Wild Hunt | 7−8
+0%
|
7−8
+0%
|
| Watch Dogs: Legion | 2−3
+0%
|
2−3
+0%
|
Full HD
Ultra Preset
| Assassin's Creed Odyssey | 4−5
+0%
|
4−5
+0%
|
| Battlefield 5 | 7−8
+0%
|
7−8
+0%
|
| Cyberpunk 2077 | 6−7
+0%
|
6−7
+0%
|
| Far Cry 5 | 5−6
+0%
|
5−6
+0%
|
| Far Cry New Dawn | 4−5
+0%
|
4−5
+0%
|
| Forza Horizon 4 | 8−9
+0%
|
8−9
+0%
|
| The Witcher 3: Wild Hunt | 7−8
+0%
|
7−8
+0%
|
| Watch Dogs: Legion | 2−3
+0%
|
2−3
+0%
|
1440p
High Preset
| Call of Duty: Modern Warfare | 5−6
+0%
|
5−6
+0%
|
| Hitman 3 | 6−7
+0%
|
6−7
+0%
|
| Horizon Zero Dawn | 10−11
+0%
|
10−11
+0%
|
| Metro Exodus | 1−2
+0%
|
1−2
+0%
|
| Red Dead Redemption 2 | 1−2
+0%
|
1−2
+0%
|
| Shadow of the Tomb Raider | 6−7
+0%
|
6−7
+0%
|
1440p
Ultra Preset
| Assassin's Creed Odyssey | 1−2
+0%
|
1−2
+0%
|
| Cyberpunk 2077 | 1−2
+0%
|
1−2
+0%
|
| Far Cry 5 | 5−6
+0%
|
5−6
+0%
|
| Forza Horizon 4 | 2−3
+0%
|
2−3
+0%
|
| The Witcher 3: Wild Hunt | 3−4
+0%
|
3−4
+0%
|
4K
High Preset
| Call of Duty: Modern Warfare | 2−3
+0%
|
2−3
+0%
|
| Hitman 3 | 3−4
+0%
|
3−4
+0%
|
| Horizon Zero Dawn | 7−8
+0%
|
7−8
+0%
|
| Red Dead Redemption 2 | 1−2
+0%
|
1−2
+0%
|
4K
Ultra Preset
| Assassin's Creed Odyssey | 1−2
+0%
|
1−2
+0%
|
| Assassin's Creed Valhalla | 1−2
+0%
|
1−2
+0%
|
| Far Cry 5 | 4−5
+0%
|
4−5
+0%
|
| Far Cry New Dawn | 6−7
+0%
|
6−7
+0%
|
This is how Iris Graphics 540 and GT 640 compete in popular games:
- Iris Graphics 540 is 9.5% faster than GT 640 in 1080p
Pros & Cons Summary
| Recency | 1 September 2015 | 5 June 2012 |
| Maximum RAM amount | 64 MB | 2 GB |
| Chip lithography | 14 nm | 28 nm |
| Power consumption (TDP) | 15 Watt | 65 Watt |
Given the minimal performance differences, no clear winner can be declared between Iris Graphics 540 and GeForce GT 640.
Be aware that Iris Graphics 540 is a notebook card while GeForce GT 640 is a desktop one.
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.
