Strangelet: Difference between revisions
| (2 intermediate revisions by the same user not shown) | |||
| Line 32: | Line 32: | ||
* 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. | ||
| Line 40: | Line 40: | ||
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)=== | ||
| Line 64: | Line 66: | ||
==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: $1683 | * Additions: $1683 | ||
Total: $ | Total: $3702 | ||