Can a 280w PSU handle my system?

super_sinbad

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May 12, 2011
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I have a Dell Optiplex 755 desktop with a proprietary 280W PSU. It comes with 80GB HDD and I added another 2TB Samsung F4 for the storage, I’m using this computer as a media player connected to my TV screen via HDMI and I’m planning to leave it on 24/7. I have also added a low profile Sapphire Radeon HD6570 1GB, so I guess I’m using the maximum capacity of the PSU and since I couldn’t find a replacement PSU that would fit and I’d like to make some more upgrades, ram or possibly a 10K rpm HDD for the OS, do you think the current PSU could keep handling this system without problems? Is there any option that I missed for upgrading the PSU?

Dell Optiplex 755 DT
1x 80GB WD 7200
1x 2TB Samsung F4
Intel Core 2 Duo E6750 2.66
2x 1GB Samsung DDR2
DVD Multi burner drive.
Sapphire Radeon HD6570 1GB low profile

I appreciate any help.
 

VirtualLarry

No Lifer
Aug 25, 2001
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I really can't see why you would want to add a 10K RPM to a HTPC. Heat/noise would be a major factor against it. Perhaps a boot SSD instead, if you need performance?

I'm running a 1TB WD Green drive in my HTPC. Plenty fast for it, and plenty of room for media storage.
 

super_sinbad

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May 12, 2011
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You're right. I actually thought of this right after I posted, booting from an SSD would make a difference, less power and better performance.

Do you think the PSU would handle the video card, both drives and probably more ram on the long run?
 

gevorg

Diamond Member
Nov 3, 2004
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Not sure about the quality of PSUs in Dell computers, but if it really is a 280w PSU, it should handle your system fine. One thing though, the PSU likely to have a loud fan which might affect your HT enjoyment (depending on how far you are from HTPC).
 

ElFenix

Elite Member
Super Moderator
Mar 20, 2000
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Not sure about the quality of PSUs in Dell computers, but if it really is a 280w PSU, it should handle your system fine. One thing though, the PSU likely to have a loud fan which might affect your HT enjoyment (depending on how far you are from HTPC).

some of those dell PSUs are sought after on spcr as they're 80+ gold in a low wattage. often funky form factors, though.
 

yottabit

Golden Member
Jun 5, 2008
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Do you think the PSU would handle the video card, both drives and probably more ram on the long run?

Your CPU has a TDP of 65W, the 6570 has a TDP of 60 W or 44W depending on if its GDDR5 or DDR3 according to this review:
http://www.hardwarecanucks.com/foru...-radeon-hd-6670-1gb-hd-6570-512mb-review.html

Just check the +12V rating on the PSU and make sure that it is above 120W. The hard drives and chipset aren't going to add a whole lot.

Regardless, if you don't plan on ever doing distributed computing or running things like furmark and prime95 concurrently than I imagine you'll be fine. Games and movies won't pull 100% power from both your CPU and video card.
 

super_sinbad

Member
May 12, 2011
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Not sure about the quality of PSUs in Dell computers, but if it really is a 280w PSU, it should handle your system fine. One thing though, the PSU likely to have a loud fan which might affect your HT enjoyment (depending on how far you are from HTPC).

This one is not that loud, I can hear it only when I'm not watching or listening to something and it doesn't really bother me.
 

super_sinbad

Member
May 12, 2011
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Your CPU has a TDP of 65W, the 6570 has a TDP of 60 W or 44W depending on if its GDDR5 or DDR3 according to this review:
http://www.hardwarecanucks.com/foru...-radeon-hd-6670-1gb-hd-6570-512mb-review.html

Just check the +12V rating on the PSU and make sure that it is above 120W. The hard drives and chipset aren't going to add a whole lot.

Regardless, if you don't plan on ever doing distributed computing or running things like furmark and prime95 concurrently than I imagine you'll be fine. Games and movies won't pull 100% power from both your CPU and video card.

Actually it's the DDR3 version so it's gonna use 44W and the +12 on the PSU says max 16A.
 

yottabit

Golden Member
Jun 5, 2008
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Actually it's the DDR3 version so it's gonna use 44W and the +12 on the PSU says max 16A.

So you've got 192 W on tap on the 12V and your two major power consuming components at full load will draw ~109W. You'll definitely be all set if that rating is true!