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MagyarIntel Iris Plus Graphics 645 vs Intel Iris Pro Graphics 6200
Intel Iris Plus Graphics 645
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The Intel Iris Plus Graphics 645 (GT3e) is a processor graphics card that was first seen in the Apple MacBook Pro 13 (Entry, 2019) in mid 2019. It is similar to the Iris Plus Graphics 655 in the 28 Watt CPUs.
The so called GT3e version of the Coffee-Lake GPU still has 48 Execution Units (EUs), which can reach up to 1150 MHz depending on the model. Besides eDRAM cache, the Iris 645 can also access the system memory (2x 64 Bit DDR3L-2133/DDR4-2400) via processor interface.
Performance
The exact performance of the Iris Plus Graphics 645 depends on the CPU model, because maximum clock as well as the size of the L3 cache can differ a bit. The system memory (DDR3/DDR4) will influence the performance as well.
The fastest chips are high-clocked Core i7 models like the Core i7-8557U. Depending on the game, the Iris Plus 655 will probably be on par with a dedicated GeForce 930M or GeForce 940MX and can handle smooth gameplay in modern titles in low up to medium settings.
Features
The reworked video engine now fully supports hardware decoding of H.265/HEVC videos. Contrary to Skylake, however, Kaby Lake can now also decode H.265/HEVC Main 10 with a 10-bit color depth as well as Google's VP9 codec. The video output is possible via DP 1.2/eDP 1.3 (up to 3840 x 2160 @60 Hz), whereas HDMI is also supported in the older 1.4a standard. An HDMI 2.0 output can be added via converter from DisplayPort. The GPU can drive up to three displays simultaneously.
Power Consumption
The Iris Plus Graphics 645 is used for 15-Watt processor and therefore small-sized notebooks.
Intel Iris Pro Graphics 6200
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The Intel Iris Pro Graphics 6200 (GT3e) is an integrated graphics card and the fastest GPU of the Broadwell generation. It is built into several high-end CPUs specified at 47 W TDP. The so-called GT3e GPU offers a fast eDRAM cache as well as 48 EUs (Execution Units) and therefore somewhat more shader power than the previous Iris Pro Graphics 5200. The clock range depends on the model it is built into (up to 1150 MHz with Turbo Boost).
Architecture and Features
Broadwell features a GPU based on the Intel Gen8 architecture, which has been optimized in various aspects compared to the previous Gen7.5 (Haswell). Inter alia, the shader arrays called "subslice" have been reorganized and now offer 8 Execution Units (EUs) each. Three subslices form a "slice" for a total of 24 EUs. Combined with other improvements such as larger L1 caches and an optimized frontend, the integrated GPU has become faster and more efficient than its predecessor.
The Iris Pro Graphics 6200 represents the high-end "GT3e" version of the Broadwell GPU family and consists of two slices with 48 EUs in total. In addition, there is also a fast eDRAM cache (128 MB), which can be found only on the Iris Pro.
All Broadwell GPUs support OpenCL 2.0 and DirectX 12 (FL 11_1). The video engine can now decode H.265 using both fixed function hardware as well as available GPU shaders. Up to three displays can be connected via DP 1.2/eDP 1.3 (max. 3840 x 2160 @ 60 Hz) or HDMI 1.4a (max. 3840 x 2160 @ 24 Hz). HDMI 2.0, however, is not supported.
Performance
Depending on the benchmark, the Iris Pro Graphics 6200 performs similar to a dedicated GeForce GT 750M or GeForce 940M. Many games of 2014/2015 can be played fluently in WXGA resolution (1366 x 768) and medium detail settings. However, very demanding games such as The Witcher 3 will require lower resolutions and/or details.
Power Consumption
Utilizing a new 14 nm FinFET process, the Iris Pro Graphics 6200 is specified at 47 W TDP (entire chip including CPU, GPU and memory controller) and therefore suited for medium-sized notebooks. The TDP is flexible and can be further reduced (37 W), which has a significant impact on performance.
| Intel Iris Plus Graphics 645 | Intel Iris Pro Graphics 6200 | ||||||||||||||||||||||||||||||||||||||||||||||||||||
| Iris Series |
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| Codename | Kaby Lake GT3e | Broadwell GT3e | |||||||||||||||||||||||||||||||||||||||||||||||||||
| Architecture | Gen. 9.5 Coffee Lake | Gen. 8 Broadwell | |||||||||||||||||||||||||||||||||||||||||||||||||||
| Pipelines | 48 - unified | 48 - unified | |||||||||||||||||||||||||||||||||||||||||||||||||||
| Core Speed | 300 - 1150 (Boost) MHz | 300 - 1150 (Boost) MHz | |||||||||||||||||||||||||||||||||||||||||||||||||||
| Memory Type | DDR3, DDR4 | ||||||||||||||||||||||||||||||||||||||||||||||||||||
| Shared Memory | yes | yes | |||||||||||||||||||||||||||||||||||||||||||||||||||
| API | DirectX 12_1, OpenGL 4.5 | DirectX 12 (FL 11_1), OpenGL 4.3 | |||||||||||||||||||||||||||||||||||||||||||||||||||
| technology | 14 nm | 14 nm | |||||||||||||||||||||||||||||||||||||||||||||||||||
| Features | QuickSync | QuickSync | |||||||||||||||||||||||||||||||||||||||||||||||||||
| Date of Announcement | 10.07.2019 | 02.06.2015 | |||||||||||||||||||||||||||||||||||||||||||||||||||
| Memory Bus Width | eDRAM + 64/128 Bit | ||||||||||||||||||||||||||||||||||||||||||||||||||||
| Notebook Size | medium sized |
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- Average benchmark values for this graphics card
