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Can my rig handle this GPU? Please Help.

Last response: in Components
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October 25, 2012 5:45:00 AM

I've been looking at buying a Sapphire 7850 to replace my Nvidia GTS450.
I'm a bit concerned that my 500w psu will not be enough to handle it.

Intel i5-2500 sandy bridge. 4gb corsair RAM. AsROCK H61m/u3s3.

Also, How would I go about attaching the "power connector"? as I have never done it when installing a GPU before and I have absolutely no idea how I would go about it.

Help a noob out?
Thanks in advance.

More about : rig handle gpu

a b ) Power supply
October 25, 2012 6:41:20 AM

What power supply make and model do you have?
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a b ) Power supply
October 25, 2012 7:07:42 AM

^ That would help greatly to know what make/model. There are really good PSU's out that would be ok at 500w and some bad one's that could burn up and still be a 500w.

With PSU's quality components is every bit as important as the amp's and watt's.
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a c 87 ) Power supply
October 25, 2012 7:13:04 AM

Most new 500W PSUs can handle the 7850 just fine.

The power draw difference at load between the GTS450 and the 7850 isn't that much. Around 20W if memory serves. Odds are good that if you are ok with the GTS450 you'll be fine with the 7850.
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a b ) Power supply
October 25, 2012 7:19:23 AM

4745454b said:
Most new 500W PSUs can handle the 7850 just fine.

The power draw difference at load between the GTS450 and the 7850 isn't that much. Around 20W if memory serves. Odds are good that if you are ok with the GTS450 you'll be fine with the 7850.

Still need the make and model. I wouldn't recommend running anything on a crap psu. All you need is a single 6 pin for the 7850 and if its a decent psu then op will be fine
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October 25, 2012 9:14:30 AM

As for attaching the connector, it's nothing to worry about - just a socket at the top rear (or rear top) of the card (i.e. the farthest from your mobo ports for network, speakers etc). If you forget to plug it in, system will just beep at you - no harm done. Just switch off and plug it in :-)
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October 25, 2012 10:33:26 AM

Yeah - sounds like you will have no problem. Just pull that card out of the mobo (look for a catch on the PCIe slot if it doesn't want to come out), pull the power connector out of your NVidia, put the new card into the slot, and plug the power connector into the socket on the new card. Even without a driver, the computer will still display Windows using a generic VGA driver (until you install AMD Catalyst).
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October 26, 2012 9:02:51 AM

My PSU is an Aywun a1-5000.
It's crap, I know. But I built this computer on an extremely tight budget (I was 14).
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a b ) Power supply
October 26, 2012 7:13:00 PM

You need a new psu. I would be surprised if it pulled over 300w.
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a c 299 ) Power supply
October 26, 2012 9:47:25 PM

blahball said:
My PSU is an Aywun a1-5000.
It's crap, I know. But I built this computer on an extremely tight budget (I was 14).


Hi Sapphire recommends 500w (which means you prob can get by w 400w), but I
think you are gambling with that particular PSU, and should look to get a
500-550w quality (antec-coraisr-seasonic-XFX-enermax to name a few)

Tom
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October 30, 2012 7:18:15 AM

So there's no way I could run the card?
I don't have the money for a new psu.
The 7850 only uses 24 more watts than my current GPU.
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a c 299 ) Power supply
October 30, 2012 12:46:50 PM

blahball said:
So there's no way I could run the card?
I don't have the money for a new psu.
The 7850 only uses 24 more watts than my current GPU.


Hi blahball - True - it's a low end psu. There are a lot of forums on this, JUst google it and read some of em.
I've been unable to find a lab review on it.

The best advice I can give you, since it is supposed to be a a 500w(which is more than enough)
unit, is try the 7850 with it, as long as it has the correct connector,if it's insufficient you'll know pretty quickly.

Tom

my gut feel is you'll be ok!
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October 30, 2012 8:06:10 PM

Are there any other GPU's you could recommend that would be more suited to my crappy PSU but have comparable performance to the 7850?
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a c 299 ) Power supply
October 30, 2012 10:19:06 PM

blahball said:
Are there any other GPU's you could recommend that would be more suited to my crappy PSU but have comparable performance to the 7850?


Hi again - both the 7770 & 7750 draw less power, but the 7850 is a big jump in performance and
does not draw a lot of power for it's performance. Your PSU doesn't have to
deliver 500w for you to run that card(prob needs 350-375w), so I'd lean towards staying with the 7850,
and start saving to upgrade your psu. The one you have should get you at least a few month's
with that card.

Tom
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October 31, 2012 4:01:28 AM

"A few monthes" Then everything explodes and you lose your comp.

jk if it's dialbotek that might happen though.

PSU before graphics card is all I'm saying. Make sure it's all powered well and fully so accidents and messups don't happen.
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a c 87 ) Power supply
October 31, 2012 5:16:23 AM

The other problem is he already has the GTS450. Buying a 7750 is a bad idea. 7770 not much better. Any chance you can buy a good PSU now, and then upgrade the GPU when you get the money again?
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a b ) Power supply
October 31, 2012 6:29:10 AM

Psu first, then gpu.
Never run on a no name crap psu for a higher end card and system. You're asking for trouble if you don't
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