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Rosewill Tachyon 1000 W

crmaris

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#1
Rosewill recently introduced their flagship series named Tachyon, which lists four Platinum efficiency PSUs made by Super Flower. The Tachyon 1000 W is the strongest unit of the series and supports up to three high-end VGAs, thanks to its powerful +12V rail and to the six PCIe connectors it is equipped with.

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#2
Question - why did you do tests at 1100W on page 5?
 

crmaris

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#3
overload tests. To check if the PSU handles well some extra load (110%).
I included this test after some demands..
 
Joined
Feb 18, 2005
Messages
1,498 (0.31/day)
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Location
South Africa
System Name Firelance
Processor i7-3770K @ 4.6GHz / 1.23V
Motherboard Gigabyte Z77X-UD5H @ F16h mod BIOS
Cooling Corsair H105 + 4x Gentle Typhoon 1850
Memory 2x 8GB Crucial Ballistix Sport DDR3-1600 CL9 @ CL7
Video Card(s) MSI GTX 1070 Armor OC with Gaming X BIOS @ 2000 core / 2300 mem
Storage 2x 256GB 840 Pro (RAID-0) + 3TB Deskstar 7K3000 + 512GB BX300 + 8TB WD Purple
Display(s) Dell U2713HM (25x14) + Acer P243W (19x12)
Case Thermaltake Core X31
Audio Device(s) Corsair VOID Wireless
Power Supply Seasonic SS-760XP² Platinum
Mouse Logitech G400
Keyboard Logitech G19
Software Windows 7 Professional x64 Service Pack 1
#4
overload tests. To check if the PSU handles well some extra load (110%).
I included this test after some demands..
I thought as much, just wasn't sure - you should've included that info in the review so people liek me don't get confused. :) Also I would've added a note about the build quality issue (fan control PCB) in the "negatives" in the summary.

Any idea why SuperFlower went with 10 IPP041N04Ns when 2 would've been able to comfortably handle this PSU's capacity? Perhaps this amount of overkill is one of the reasons for the exceptional +12V stability?
 

cdawall

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crmaris

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#6
I thought as much, just wasn't sure - you should've included that info in the review so people liek me don't get confused. :) Also I would've added a note about the build quality issue (fan control PCB) in the "negatives" in the summary.

Any idea why SuperFlower went with 10 IPP041N04Ns when 2 would've been able to comfortably handle this PSU's capacity? Perhaps this amount of overkill is one of the reasons for the exceptional +12V stability?
Because I didn't have a second sample in hand to check if the fan PCB issue is replicated or fixed, this is why I didn't added to the negatives. However I deducted some build quality points. And the thing is that with a little glue this problem would be easily solved.

More fets working in parallel mean less Amps passing by from them so less energy losses. This leads to efficiency increase. The +12V stability has more to do with the feedback circuit and the overall design of the secondary side rather than the number of rectifying fets.
 

cdawall

where the hell are my stars
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#8

crmaris

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#9
I just hope they will send one because so far I don't have a confirmation on this :)
 
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