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Minimum PSU for a Quad Core and a G80 or R600

Sithtiger

Member
What's the minimum PSU wattage you'd recommend for a system? I'll tell ya what I currently have and what I'm planning on getting. Here's what I have: A64 X2 4400+@2.31GHz, 2GB 4x512MB of PC3200 Corsair ValueRAM, MSI K8N Neo4 Platinum mobo, GF 7800 GTX 512, Sound Blaster X-Fi XtremeGamer Fatal1ty sound card, 1 Lite-On DVD-ROM, 1 Lite-On DVD burner, 1 WD IDE 7200RPM HD, 1 Seagate SATA 7200 RPM, 1 Floppy, 1 Enermax 535 watt PSU, 5 80mm case fans.

Now, here's what I want to build: Core 2 Quad Q6600, 2GB 2x1GB of DDR 667MHz Corsair XMS RAM, G80 or R600 (whichever comes out first), Asus P5B-E mobo, Sound Blaster X-Fi XtremeGamer Fatal1ty sound card, 1 Lite-On DVD burner, 1 Floppy, 1 WD IDE 7200 RPM HD, 1 SATA Seagate 7200 RPM HD, 5 80mm case fans and I want to use my 535 Watt Enermax PSU if I can. According to this PSU calculator, I'll only need a 408 watt PSU if I buy the G80 (GF 8800 GTX) http://extreme.outervision.com/psucalculatorlite.jsp

My Enermax 535 watt PSU has two 12v rails and each rail says it has 18a on it and they total 34a according to sticker on the PSU. It seems like it has enough power, but then again I don't want to burn up my whole new system when I build it.

Now, do you guys agree with that assessment or should I get a new PSU too? The problem is, I really don't have enough money to buy a new PSU, otherwise, I'd get one in a heartbeat...the PC Power and Cooling Quad 750 watt PSU to be precise for $199 at Newegg, but I don't have the extra $200 or else I would. I'd rather have allot of overhead but I just can't afford it now. Another alternative is getting the E6600 Dual Core, in which case I'll have enough money to buy the PCP Quad 750. Whatever happens I'm waiting until April 22nd where Intel drops their prices on their CPU's so the currently expensive Q6600 will drop down to a more manageable $530.
 
That PSU calculator significantly overstates the power requirements of a system. So, if it says you are okay with your 535 watt power supply, I am sure you are fine. There has been another thread going on right now regarding how much people overstate the need for a mega power supply. I have a 465 watt power supply with a bunch of stuff running on it and my measured draw from the AC line is never over 245 watts.

http://forums.anandtech.com/messageview.aspx?catid=27&threadid=2025542
 
Originally posted by: conlan
No worries, your current PSU will be fine 🙂

Even with a R600? Well I guess no one can say that until the R600 final specs are revealed but the rumors for it's power draw are between 200 and 300 watts!
 
I think what I'm going to do is either buy a new lower wattage PSU or buy a refurbished PCP&C because it has the same warranty that a brand new one has.

Thanks for the input guys!
 
Originally posted by: Gdepp519
it might be better to get a new one and stay away from referbs.. imho

Normally I would agree with you 100% and in the past I've always done that...that is always buy new stuff and I may again. That's just an option but I'll have to see what Corsair offers in their priceranges around 600 watt+
 
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