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This review is from: GIGABYTE GA-X79-UP4 LGA 2011 Intel X79 SATA 6Gb/s USB 3.0 ATX Intel Motherboard
Pros: Nice board. Good overclocking options. Solid build quality
Cons: This has the bug where the motherboard resets the CPU causing the time-stamp-counter (TSC/RDTSC) to skew backwards.
$ dmesg | grep tsc
[ 0.000000] tsc: Fast TSC calibration using PIT
[ 0.004000] tsc: Detected 3202.275 MHz processor
[ 0.008000] tsc: Marking TSC unstable due to check_tsc_sync_source failed
Same setup using an ASUS motherboard (with the newest BIOS)
$ dmesg | grep tsc
[ 0.000000] Fast TSC calibration using PIT
[ 2.373499] Refined TSC clocksource calibration: 3400.023 MHz.
[ 2.373585] Switching to clocksource tsc
RDTSC is a way to get super fast timings from the CPU where a full blown clock, or HPET is not needed.
Other Thoughts: Tried updating BIOS (shipped one back from latest), did not fix the TSC bug. Confirmed with Intel x86 engineer that TSC problems like this are from flaky BIOS's. If you need the TSC for anything, this is not your motherboard.READ FULL REVIEW
This review is from: Scythe DFS123812-3000 "ULTRA KAZE" 120 x 38 mm Case Fan
Pros: Cheap, seems like a quality build (I mean there are not made of metal, but feel strong and have some weight to them), moves a lot of air.
Cons: Noise? Maybe, I think they are only slightly louder than my stock H80 fans.
Other Thoughts: I put two of these in a push/pull configuration on my H80 cooler. Running a i7-2600k @ 5GHz and it passes mprime stress test no problem now (before it would shut off the machine due to overheating, CPU temps would go above > 80C), now mprime stress and CPUS are 68C-69C max. 29C @ idle with ambient room temperature around 24C (75F).
They are slightly louder than stock, but they also have a different sound. Maybe its the larger blades and 38mm thickness. Louder, but less annoying sound, IMHO.
I had to get some 6-32 x 2-inch screws at local hardware store to mount them with the H80, as with the 38mm thickness, the stock screws can't reach.
Pros: Fast, trim support in linux
Cons: noneREAD FULL REVIEW