Hello,
so I just ordered a Seasonic S12-380 for my server, mainly because of efficiency. Just for fun I measured it against my SS-300SFD 80+ Seasonic and was very disappointed with the results:
SS-300SFD idle: 25w, max during bootup: 64w
SS-380HB idly: 31w, max during bootup: 77w
I believe it will be more efficient in my server because it has a much higher load, probably around 100-150w (never idle, 8 3.5" disks in RAID5 and so on) but I'm still surprised how badly it performed against the 80+ supply. I sure do love my little SS-300SFD!
Or are there any other possible explanations, how does all the PFC-stuff affect the power meter?
Regards,
Kent.
Disappointed with S12-380 (SS-380HB)
Moderators: NeilBlanchard, Ralf Hutter, sthayashi, Lawrence Lee, Devonavar
Your SS-300SFD also has active PFC, so that isn't the issue.
The issue is that the S12-380 just isn't as efficient as the SS-300, especially since the 20% load point of the S12-380 is 76w compared to to 60w and typically efficiency drops off rapidly below the 20% load level, even on 80plus certified PSUs.
Only recently have the S12-380s been made 80plus compliant, do you have one of those or one of the earlier ones?
The issue is that the S12-380 just isn't as efficient as the SS-300, especially since the 20% load point of the S12-380 is 76w compared to to 60w and typically efficiency drops off rapidly below the 20% load level, even on 80plus certified PSUs.
Only recently have the S12-380s been made 80plus compliant, do you have one of those or one of the earlier ones?
Can't find any date of manufacturing on it, S/N R0612AA2B0960794. Could 0612 mean december 2006? No 80+ sticker on it.drees wrote:Only recently have the S12-380s been made 80plus compliant, do you have one of those or one of the earlier ones?
So hopefully it will perform better in the server then... Thanks for your respons.
Regards,
Kent.
Thanks for the correction.jaganath wrote:The S12 range is not 80Plus compliant, the S12II range is.
Anyway, just looking at the SPCR reviews, of the SS-300FD compared to the S12 series, kentc's numbers just about match up in terms of the expected efficiency and power draw.
http://www.silentpcreview.com/article286-page4.html
http://www.silentpcreview.com/article596-page4.html
http://www.silentpcreview.com/article226-page3.html
Edit: SPCR has reviewed some S12 80plus models, I would expect the S12II to perform similarly:
http://www.silentpcreview.com/article656-page4.html
Ofcourse I should've checked the reviews... My bad!
Now I'm gonna go upgrade the server, will post the (hopefully) much improved figures over my current Chieftech PSU in an hour.
Edit:
Maximum (startup) used to be 245w, now 204w
Idle (2GHz/1.4V) used to be: 89w, now: 82w
Everyday(*) work now: average 105w
That's a:
AMD A64 3200+ (1.1/1.4V stock)
MSI K8NGM2-FID
2x 512MB DDR-400
8x 3.5" HDD RAID5
CD-RW
2x PCI Network Adapters
* streaming 1080p for HTPC, Folding, firewall duties and Azureus with 4 active torrents.
Reagrds,
Kent
Now I'm gonna go upgrade the server, will post the (hopefully) much improved figures over my current Chieftech PSU in an hour.
Edit:
Maximum (startup) used to be 245w, now 204w
Idle (2GHz/1.4V) used to be: 89w, now: 82w
Everyday(*) work now: average 105w
That's a:
AMD A64 3200+ (1.1/1.4V stock)
MSI K8NGM2-FID
2x 512MB DDR-400
8x 3.5" HDD RAID5
CD-RW
2x PCI Network Adapters
* streaming 1080p for HTPC, Folding, firewall duties and Azureus with 4 active torrents.
Reagrds,
Kent