Strangelet: Difference between revisions
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* Replaced 3x Nidec Ultra Flow rear fans with Noctua NF-A8 chromax.Black ($63) | * Replaced 3x Nidec Ultra Flow rear fans with Noctua NF-A8 chromax.Black ($63) | ||
* Replaced 4x San Ace 92 fans with Noctua NF-A9 chromax.Black ($86) | * Replaced 4x San Ace 92 fans with Noctua NF-A9 chromax.Black ($86) | ||
* Replaced 4x 4U SuperMicro heatsinks with 4x Alphacool Eisblock XPX Pro Aurora waterblocks | * Replaced 4x 4U SuperMicro heatsinks with 4x Alphacool Eisblock XPX Pro Aurora waterblocks ($215) | ||
* Replaced 4x E7-4850 v2 Xeons with 4x E7-8890 v3 Xeons ( | * Replaced 4x E7-4850 v2 Xeons with 4x E7-8890 v3 Xeons ($60) | ||
* Sold 16x 16GB DDR3-1066 ECC 4x4 RDIMMs (-$74) | * Sold 16x 16GB DDR3-1066 ECC 4x4 RDIMMs (-$74) | ||
We lose a good deal of airflow and static pressure with the fan change; the new fans are thinner (25mm), and rotate at significantly lower speeds. The NF-A8 is 2.37 mmH₂O and 55.5 m³/h, and the NF-A9 2.28 mmH₂O and 78.9 m³/h, compared to 197.9 and 239.6 m³/h for the builtin equivalents. We're thus down to about 25% the original airflow, but in exchange, we've almost completely eliminated noise. | We lose a good deal of airflow and static pressure with the fan change; the new fans are thinner (25mm), and rotate at significantly lower speeds. The NF-A8 is 2.37 mmH₂O and 55.5 m³/h, and the NF-A9 2.28 mmH₂O and 78.9 m³/h, compared to 197.9 and 239.6 m³/h for the builtin equivalents. We're thus down to about 25% the original airflow, but in exchange, we've almost completely eliminated noise. | ||
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The E7-8890s v3s are big upgrades on the E7-4850 v2s, increasing my core count by 50% and moving to the far superior [[Ivy Bridge]] microarchitecture. | The E7-8890s v3s are big upgrades on the E7-4850 v2s, increasing my core count by 50% and moving to the far superior [[Ivy Bridge]] microarchitecture. | ||
Replacements total: $197 + $15 + $63 + $86 + $215 + $60 - $74: $562 | |||
===Additions (newly purchased)=== | ===Additions (newly purchased)=== | ||
* | * 32x 32GB Samsung PC3L-12800L DDR3 ($679) | ||
* 32x 32GB Samsung PC3L-12800L DDR3 ($326) | |||
* 32x 32GB Samsung PC3L-12800L DDR3 ($ | |||
* 2x [https://www.amazon.com/dp/B09JM5FVC7?psc=1&ref=ppx_yo2ov_dt_b_product_details Bejavr M.2 PCIe cards] ($23) | * 2x [https://www.amazon.com/dp/B09JM5FVC7?psc=1&ref=ppx_yo2ov_dt_b_product_details Bejavr M.2 PCIe cards] ($23) | ||
* 2x [https://www.amazon.com/dp/B099185SSV?psc=1&ref=ppx_yo2ov_dt_b_product_details GLOTRENDS U.2 PCIe card] ($46) | * 2x [https://www.amazon.com/dp/B099185SSV?psc=1&ref=ppx_yo2ov_dt_b_product_details GLOTRENDS U.2 PCIe card] ($46) | ||
* Connect-X CX455A [[100GbE|100Gbps]] QSFP28 PCIe ($150 including BiDi transceiver) | |||
* 2x Samsung 980 1TB M.2 2280 PCIe 3.0 NVMe SSDs ($175) | * 2x Samsung 980 1TB M.2 2280 PCIe 3.0 NVMe SSDs ($175) | ||
* SuperMicro SSD-DM016-SMCMVN1 16GB 6G SATA-DOM ($35) | |||
* Chelsio N320E-CR 10Gb/s dual-port ($66) | |||
* 2x NVIDIA K80 Tesla ($183) | |||
* 2x USB 3.0 powered hub | |||
* USB 3.2 PCIe card | * USB 3.2 PCIe card | ||
Additions total: $679 + $326 + $23 + $46 + $150 + $175 + $35 + $66 + $183 = $1683 | |||
===Additions (from stores on hand)=== | ===Additions (from stores on hand)=== | ||
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==TCO== | ==TCO== | ||
I bought an [https://www.server-rack-online.com/apc-netshelter-ar2105blk.html APC NetShelter VX] secondhand to house this monster, though that is not included in the TCO. Similarly, there are several hundred dollars of watercooling expenses ( | I bought an [https://www.server-rack-online.com/apc-netshelter-ar2105blk.html APC NetShelter VX] secondhand to house this monster, though that is not included in the TCO. Similarly, there are several hundred dollars of watercooling expenses (a [[inaMORAta|MoRa-3]], an EKWB Dual XTOP D5...) that I've not bothered to include. Altogether, they would add about another thousand to the bill. | ||
* Original: $1457 | * Original: $1457 | ||
* Replacements: $ | * Replacements: $562 | ||
* Additions: $ | * Additions: $1683 | ||
Total: $3702 | |||
Total: $ | |||