Would I need to upgrade my PSU to run a 5770?

[therealtelos]

Hi I just purchased a refurbished Dell Studio XPS 8100 and I feel an immediate need to upgrade its onboard graphics. I believe the power supply supplied with the computer is 350W. I am wondering if I could run a 5750, or even a 5770 on this PC without upgrading my power supply. The rest of my system is as followed:

i5-750
4GB DDR3 1333mhz (4 sticks)
640gb SATA II Hdd
Nvidia G310 512mb

Thanks in advance for any help.

 

[rofl_my_waffle]

No if you are not overclocking.

 

[4745454b]

Cutting it a hair close, but you should be good. You got almost 30A on that PSU, so it should work. As long as your not overclocking and keeping the temps in range you should be fine.

 

[gablesmath]

I'm really no pro, but from what I have read, a 450W PSU would be greatly appreciated or even 550 for upgradability, I don't know for you, but the card i'm about to buy (HD 4850) has a requirement of 450W (in specs).

If you want to check, http://www.extreme.outervision.com/PSUEngine is a great site (as I was told).

Like I said, I'm no pro, but I guess you'll have to upgrade your PSU

 

[reignsupreme11]

yeah, with a 30A rail you should be fine. like everybody else is saying, you just won't be able to overclock at all

 

[suat]

If you have 350 W, then you are O.K. with HD5770 and stock speeds. Pls see: http://extreme.outervision.com/PSUEngine

 

[4745454b]

Gable, the 4850 is an older card that needs more power. The 5770 is a new card on a smaller process so it uses less power. The 5750 is around 88W, while the 5750 is around 110W. Assuming he has a 100W CPU, that still leaves (350W - 210) 140W for everything else. And he'd need his CPU and CPU to both be going hard to hit that number. As I said, it would be close by Dell has been using good PSUs in their systems recently so he should be ok. I wouldn't go overclocking or adding a bunch of stuff in there but he should be fine.

I was told awhile ago that its 30A, but that would be 360W which is more then 350W. Its probably 29 or 28A.

 

[therealtelos]

Okay thanks for all the replies... just a couple more questions, would I be fine running most games at high settings with stock speeds on the 5770?

Or should I get a 5750 and overclock it?

 

[4745454b]

What resolution? The 5750 is like a 4850 or GTS250. 1680x1050 should be good for most games, expect problems with the big games like Crysis or Metro2033. I have a 5750 at stock speeds and "game" at 1680x1050. The problem is I ONLY play TF2, which isn't a demanding game. Even my old 8800GS could handle it. I'd get the 5770 if you play at 1080 or higher, or if you play a lot of demanding games.

 

[Kewlx25]

an i7 920 OC'd to 3.9ghz with 6gb of 2100mhz ddr3 and an ati5770 pulls ~280watts at the wall at full cpu+gpu load. Assume 85% efficiency and that's 238watts. I would assume a 350watt should be safe.

I think it was Toms Hardware that had a kill-a-watt registering these values on the above stated machine. Whichever place it was, it was a reliable source.

 

[therealtelos]

I would prefer to play at 1920x1080 if possible at med-high settings.

Thanks to most of you for the speedy and undoubtedly valuable responses so far

 

[Misko195]

No if you are not overclocking.

What you say men :lol:

 

[4745454b]

If your going to be playing at 1080 I'd look at getting the 5770 at least. The 5850 is a better option.

 

[Misko195]

Is not enough, what is this. Help him, why everyone recommend 350W.

Just ATI recomment 450W for HD5770, he have i5 750 and 4Gb (i guess 2 stick), where the HDD, where the DVD, where the case fans, where the cooler maybe have a USB stick, printer or something , btw here one site for calculating power:

http://www.msi.com/index.php?func=power

Men don't risky with this PSU. This PSU don't have enough ampers (i guees)

 

[Misko195]

About playing 474874 is right, 5770 is good option for 1080 but 5850 is much much better (ofc much expensive).
I have for myself HD5770 on i5 750 and only 2Gb DDR3 and i play every game in 1920x1080

Take a look on YouTube and see how is playing on 5770...

 

[4745454b]

Is not enough, what is this. Help him, why everyone recommend 350W.

Not recommending a 350W PSU, telling him he can keep the one he has. A 5770 should just fit inside the Dell 350W PSU. If he buys that card he doesn't need to upgrade, which is the title of the thread. Forgot to mention, if he goes with the 5850, not a chance. He'd need a new PSU then.

 

[Misko195]

Is not enough, what is this. Help him, why everyone recommend 350W.

Not recommending a 350W PSU, telling him he can keep the one he has. A 5770 should just fit inside the Dell 350W PSU. If he buys that card he doesn't need to upgrade, which is the title of the thread. Forgot to mention, if he goes with the 5850, not a chance. He'd need a new PSU then.

Ok men, but i still will go with better supply.. (it's little risky for me)

 

[Misko195]

its nice of you to offer purchasing a new PSU for him, makes sure to forward you CC# along with the back 3 security numbers to him so he can order a new PSU.

Ok, but i don't want to come out that he need to buy PSU and GPU little later...

Just stand on his place and please be honest, will you go with 350W PSU?

And, i think you know good that ATI recommend 450W for HD5770 at standard PC...

DELL 350W, but true power is for sure max 300W

 

[Misko195]

would i go with a DELL 350w unit? yes!
ATI could recommend a 1000w unit for all I care. ATI/Nvidia recommendations are for people who purchase PSU off ebay for $10.
the "true power" of that DELL unit is at least 350 continuous watts and a peak of probably close to 425w. That 350w PSU was sold with ATI 4850 video cards. The 4850 uses more power then the 5770. 4745454b has already stated it has more then enough amps on the 12v (the real deal breaker in video cards and PSU). DELL always under states their power supplies. I ran a 9800GT off a DELL 305w. The 5770 and 9800GT use similar power.

so the real question is, why do you offer advice when you know so little about power supplies?

he have high end sys and how you sugest him that 350W is enough power.
Maybe im not a genius like you , but i know enough about PSU...

Men take goolge little and learn, DELL 350W but peak 425W effectiveness:130% Bravooo :lol: :lol: :lol: .

what you offer? That is DELL 350W enough power for i5 750, HD5770, HDD 640gb, 4Gb DDR3 and many more? Cmon be serious.

Ok, i will stop here. And TheRealTelos go with 350W, ignore my posts.

Btw, and im not here for fight..

 

[4745454b]

Men take goolge little and learn, DELL 350W but peak 425W effectiveness:130% Bravooo :lol: :lol: :lol:

It doesn't work that way. Some companies list the peak wattage, but can supply a sustained figure thats way smaller. Jonnyguru had a review recently of a DiabloTek 1kW PSU that couldn't do 600W. Other companies list what they can sustain, but the supply can do a lot more. Seasonic is near famous for underrating their PSUs.

Again, if he was buying new I would tell him to get the Corsair 400W or one of the 400W+ units from Antec. However, he already has the 350W dell PSU and its enough for his 5770. He'd need to buy a bigger one for the 5850.

 

[therealtelos]

If your going to be playing at 1080 I'd look at getting the 5770 at least. The 5850 is a better option.

Okay, would I need to invest in a 1GB card for 1920x1080 or will a 512mb card be enough? I don't plan to use more than one monitor.

 

[therealtelos]

Best answer selected by therealtelos.

 

[4745454b]

Do they make a 512MB 5770 or 5850? Technically the ram size doesn't matter. It does in this case as you need enough to hold that many pixels. Now whether you get a 1GB card or a 1.5GB card matter less.