Add hw compare

attic/hardware_comparision_agisoft_photoscan.markdown

+# Agisoft PhotoScan Hardware Permformance/Cost
+
+This shows a comparision of several CPU types for use with Agisoft PhotoScan
+
+References:
+
+- [anandtech 2017 CPU tests win10 - photoscan 1.3.3 large](https://www.anandtech.com/bench/CPU)
+- [Agisoft PhotoScan Multi Core Performance](https://www.pugetsystems.com/labs/articles/Agisoft-PhotoScan-Multi-Core-Performance-709/)
+- [Estimating CPU Performance using Amdahls Law](https://www.pugetsystems.com/labs/articles/Estimating-CPU-Performance-using-Amdahls-Law-619/)
+- [Agisoft PhotoScan GPU Acceleration](https://www.pugetsystems.com/labs/articles/Agisoft-PhotoScan-GPU-Acceleration-710/)
+- [Intel CPU specs](https://ark.intel.com)
+- [AMD CPU specs](https://en.wikichip.org/wiki/amd/)
+- [Digitec Prices 2018-03-01](https://www.digitec.ch/)
+
+## CPU
+
+The last 3 columns show the buildtimes (total and stages 1 and 2) for [anandtech 2017 CPU tests win10 - photoscan 1.3.3 large](https://www.anandtech.com/bench/CPU). The software uses four stages:
+
+1. Align Photos
+2. Build Dense Cloud
+3. Build Mesh
+4. Build Texture
+
+Of these four steps, only the "Build Dense Cloud" step is able to utilize the video card. However, that one step takes longer than all the others combined so it makes choosing the correct GPU for PhotoScan critical to ensuring that the hardware in your system is correctly optimized.
+
+
+| cpu       | socket | mem       | max-mem | cores | frequency | turbo | cost | total | s1  | s2   |
+|-----------|--------|-----------|---------|-------|-----------|-------|------|-------|-----|------|
+| i9 7980XE | 2066   | ddr4-2666 | 128     | 18    | 2.6       | 4.2   | 2049 | 2081  | 344 | 1292 |
+| i9 7960X  | 2066   | ddr4-2666 | 128     | 16    | 2.8       | 4.2   | 1699 | 2026  | 343 | 1269 |
+| i9 7940X  | 2066   | ddr4-2666 | 128     | 14    | 3.1       | 4.3   | 1444 | ?     | ?   | ?    |
+| i9 7920X  | 2066   | ddr4-2666 | 128     | 12    | 2.9       | 4.3   | 1189 | ?     | ?   | ?    |
+| i9 7900X  | 2066   | ddr4-2666 | 128     | 10    | 3.3       | 4.3   | 999  | ?     | ?   | ?    |
+| TR 1950X  | TR4    | ddr4-2666 | 1024    | 16    | 3.4       | 4.0   | 999  | 2374  | 333 | 1507 |
+| i7 7820X  | 2066   | ddr4-2666 | 128     | 8     | 3.6       | 4.3   | 609  | 2515  | 508 | 1608 |
+| TR 1920X  | TR4    | ddr4-2666 | 1024    | 12    | 3.5       | 4.0   | 779  | 2560  | 377 | 1647 |
+| R7 1800X  | AM4    | ddr4-2666 | 64      | 8     | 3.6       | 4.0   | 374  | 2769  | 510 | 1809 |
+| R7 1700X  | AM4    | ddr4-2666 | 64      | 8     | 3.4       | 3.8   | 334  | 2769  | 537 | 1882 |
+| i7 6850K  | 2011v3 | ddr4-2400 | 128     | 6     | 3.6       | 3.8   | 399  | 3261  | 808 | 2020 |
+| i7 4960X  | 2011   | ddr3-1333 | 64      | 6     | 3.6       | 4.0   | ?    | ?     | ?   | ?    |
+
+## Other system components
+
+| component      | type        | amount      | capacity total (GB) | cost |
+|----------------|-------------|-------------|---------------------|------|
+| board MSI X299 | LGA 2066    | 8 ddr4-2666 | 128                 | 352  |
+| board MSI X99A | LGA 2011v3  | 8 ddr4-2666 | 128                 | 391  |
+| board MSI X399 | TR4         | 8 ddr4-2133 | 128                 | 389  |
+| board MSI X370 | AM4         | 4 ddr4-2133 | 64                  | 175  |
+| GPU GeForce    | GTX 1080 Ti | 1 gddr5x    | 11                  | 1200 |
+| memory         | 16G         | 8 ddr4-2666 | 128                 | 1600 |
+| memory         | 16G         | 4 ddr4-2666 | 64                  | 800  |
+| case, power    |             |             | 1000 W              | 500  |
+| ssd            | m2 2280     | 1           | 512                 | 240  |
+| hd             | sata        | 1           | 2000                | 100  |
+
+## Recommended system configurations
+
+Base hardware:
+
+- case, power, ssd, hd: 800
+- board (2066, 2011, TR4): 400
+- board (AM4): 200
+
+### Low End:
+
+AMD:
+
+- base: 1000
+- 64G mem: 800
+- 1x GPU: 1200
+- R7 1800X: 400
+- total: 3400
+
+Intel:
+
+- base: 1200
+- 64G mem: 800
+- 1x GPU: 1200
+- i7 6850K: 400
+- total: 3600
+
+### Medium End:
+
+Intel:
+
+- base: 1200
+- 64G mem: 800
+- 2x GPU: 2400
+- i7 7820X: 600
+- total: 5000
+
+AMD:
+
+- base: 1000
+- 64G mem: 800
+- 2x GPU: 2400
+- R7 1800X: 400
+- total: 4600
+
+High End:
+
+Intel:
+
+- base: 1200
+- 128G mem: 1600
+- 3x GPU: 3600
+- i9 7960X: 1700
+- total: 8100
+
+AMD:
+
+- base: 1200
+- 128G mem: 1600
+- 3x GPU: 2400
+- TR 1950X: 1000
+- total: 7400
+