PSU reccomendations on new rig.

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CrudOfCrow

Member
Jun 8, 2006
35
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Still looking for a PSU and some harddrives. Any suggestions? Also, i want to know if this setup is CF compatible(would like a PSU to compensate this in a possible future upgrade). Any $$$ saving tips? I could probably save some money on some budget RAM....I've got it down to $1485 as it stands and i'd like to keep it as close to $1500-1600 as possible.

Case $230
LIAN LI PC-V1200Bplus II Black Aluminum ATX Mid Tower Computer Case - Retail

Motherboard $270
ASUS P5W DH DELUXE/WIFI-AP Socket T (LGA 775) Intel 975X ATX Intel Motherboard - Retail

CPU $360
Intel Core 2 Duo E6600 Conroe 2.4GHz 4M shared L2 Cache LGA 775 Processor - Retail

GPU $315
SAPPHIRE 100149 Radeon X1900XT 512MB GDDR3 PCI Express x16 Video Card - OEM

RAM $270
CORSAIR XMS2 2GB (2 x 1GB) 240-Pin DDR2 SDRAM DDR2 800 (PC2 6400) Unbuffered Dual Channel Kit System Memory Model TWIN2X2048-6400 - Retail

DVD-RW $40
LITE-ON Black 16X DVD+R 8X DVD+RW 8X DVD+R DL 16X DVD-R 6X DVD-RW 5X DVD-RAM 16X DVD-ROM 48X CD-R 24X CD-RW 48X CD-ROM 2M Cache ATAPI/E-IDE DVD Burner With LightScribe - Retail
 
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CrudOfCrow

Member
Jun 8, 2006
35
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Is that the same thing as SilverStone Strider ST60F 600W Modular Power Supply - SLI Certified?? I was looking at that before when i was thinking about going SLI. The website in your sig, says that these are the same thing and they look ...identical. Why is there a $50 difference?
 
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Howard

Lifer
Oct 14, 1999
47,982
11
81
Marketing. Silverstone takes other PSUs, sometimes pretties them up, and sells them for more than the OEM does.

The ST60F won't have a problem with X1900XT Crossfire or quad SLI, but you can fix it on the ENS-0560G by powering one of the cards with a 4-pin adapter.
 
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CrudOfCrow

Member
Jun 8, 2006
35
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The ST60F won't have a problem with X1900XT Crossfire or quad SLI, but you can fix it on the ENS-0560G by powering one of the cards with a 4-pin adapter.
Click to expand...

What exactly do you mean by "Fix it."

will this one work? Hiper Type-R 580W Modular Power Supply - Black (SLI Certified) or should i really stick with 600w+
 
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wgoldfarb

Senior member
Aug 26, 2006
239
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0
Howard,

Wow, great page on selecting a PSU. :thumbsup:

I am looking for a PSU that can deliver around 35A off the 12V rails. This already includes plenty of headroom for "safety", overclocking and future upgrades. I am leaning towards the Corsair CMPSU-520HX (for what I do, I will never need dual GPUs so I don't need to worry about Crossfire or SLI). However, in the post above you mentioned the Enhance ENS-0560G, which seems to have higher output for about $30 less. It sounds like free lunch! :)

What would I be giving up by selecting the Enhance over the Corsair? What attracted me to the Corsair was that it seems to be quiet, and that (as I understand it) it uses high quality capacitors, which means it will have a long life -- i'd like to keep this for a while.
 
H

Howard

Lifer
Oct 14, 1999
47,982
11
81
Originally posted by: CrudOfCrow
The ST60F won't have a problem with X1900XT Crossfire or quad SLI, but you can fix it on the ENS-0560G by powering one of the cards with a 4-pin adapter.
Click to expand...

What exactly do you mean by "Fix it."

will this one work? Hiper Type-R 580W Modular Power Supply - Black (SLI Certified) or should i really stick with 600w+
Click to expand...
The latest Intel spec requires that power supplies limit the total available current on any +12V rail to 20A or less. If you put two X1900XT cards on the same rail, that's about, hm, 13A if you don't put the motherboard on the same rail. If the mobo and both the PCIe plugs are on the same rail, though, that's over 20A (the motherboard supplies up to ~45W to the cards through the PCIe slots), and the supply won't deliver enough current even if the combined max is greater than the sum of your parts' requirements.

However, by using an adapter, you power one of the cards from the rail with the HDs and optical drives.
 
PingSpike

PingSpike

Lifer
Feb 25, 2004
21,758
603
126
Originally posted by: Howard
Originally posted by: CrudOfCrow
The ST60F won't have a problem with X1900XT Crossfire or quad SLI, but you can fix it on the ENS-0560G by powering one of the cards with a 4-pin adapter.
Click to expand...

What exactly do you mean by "Fix it."

will this one work? Hiper Type-R 580W Modular Power Supply - Black (SLI Certified) or should i really stick with 600w+
Click to expand...
The latest Intel spec requires that power supplies limit the total available current on any +12V rail to 20A or less. If you put two X1900XT cards on the same rail, that's about, hm, 13A if you don't put the motherboard on the same rail. If the mobo and both the PCIe plugs are on the same rail, though, that's over 20A (the motherboard supplies up to ~45W to the cards through the PCIe slots), and the supply won't deliver enough current even if the combined max is greater than the sum of your parts' requirements.

However, by using an adapter, you power one of the cards from the rail with the HDs and optical drives.
Click to expand...

How do you determine which rails you're using. Thats odd, I would have thought the PCI-E connectors would always be a seperate rail since the processor and video card are the two big power drawers and you'd definately want them seperated. So should I bust out the PCI-E adaptor for my single card/dual core setup instead of running it off the regular pci-e plug coming right out of the PSU?
 
H

Howard

Lifer
Oct 14, 1999
47,982
11
81
Originally posted by: PingSpike
Originally posted by: Howard
Originally posted by: CrudOfCrow
The ST60F won't have a problem with X1900XT Crossfire or quad SLI, but you can fix it on the ENS-0560G by powering one of the cards with a 4-pin adapter.
Click to expand...

What exactly do you mean by "Fix it."

will this one work? Hiper Type-R 580W Modular Power Supply - Black (SLI Certified) or should i really stick with 600w+
Click to expand...
The latest Intel spec requires that power supplies limit the total available current on any +12V rail to 20A or less. If you put two X1900XT cards on the same rail, that's about, hm, 13A if you don't put the motherboard on the same rail. If the mobo and both the PCIe plugs are on the same rail, though, that's over 20A (the motherboard supplies up to ~45W to the cards through the PCIe slots), and the supply won't deliver enough current even if the combined max is greater than the sum of your parts' requirements.

However, by using an adapter, you power one of the cards from the rail with the HDs and optical drives.
Click to expand...

How do you determine which rails you're using. Thats odd, I would have thought the PCI-E connectors would always be a seperate rail since the processor and video card are the two big power drawers and you'd definately want them seperated. So should I bust out the PCI-E adaptor for my single card/dual core setup instead of running it off the regular pci-e plug coming right out of the PSU?
Click to expand...
First and foremost, don't fix what isn't broken.

In almost all two-rail supplies, the CPU's 4-pin plug is on the 2nd rail and everything else is on the first rail (12V2 and 12V1 respectively). If there's only one PCIe plug, you only have to worry about the combined max output unless you have an insane amount of drives or lots of other stuff like pumps and fans. However, if there are two of them and they're both used, the rail they're on could hit the current limiter and fail to provide the necessary current.

Most respectable manufacturers will show the rail allocation. If not, chances are at least one review will.
 
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CrudOfCrow

Member
Jun 8, 2006
35
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0
I think i might actually get the 620W Liberty. Its pricey though. I'm having a hard time keeping the price of this thing below $1500. Got any reccomendations for RAM? Right now i've got:

RAM $270
CORSAIR XMS2 2GB (2 x 1GB) 240-Pin DDR2 SDRAM DDR2 800 (PC2 6400) Unbuffered Dual Channel Kit System Memory Model TWIN2X2048-6400 - Retail

But i'd like to find something a little less expensive.
 
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Dethfrumbelo

Golden Member
Nov 16, 2004
1,499
0
0
Originally posted by: Blain
620W Liberty.
Click to expand...

So if I'm reading the specs correctly, this PSU can provide 22A max on one of the 12V rails provided that the other rail is not pulling more than 36-22=14A. The CPU is unlikely to pull more than 14A, so you're guaranteed the 22A for PCIe, etc.



 
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CrudOfCrow

Member
Jun 8, 2006
35
0
0
Originally posted by: Dethfrumbelo
Originally posted by: Blain
620W Liberty.
Click to expand...

So if I'm reading the specs correctly, this PSU can provide 22A max on one of the 12V rails provided that the other rail is not pulling more than 36-22=14A. The CPU is unlikely to pull more than 14A, so you're guaranteed the 22A for PCIe, etc.
Click to expand...

is that good?
 
drum

drum

Diamond Member
Feb 1, 2003
6,810
4
81
Originally posted by: CrudOfCrow
I think i might actually get the 620W Liberty. Its pricey though. I'm having a hard time keeping the price of this thing below $1500. Got any reccomendations for RAM? Right now i've got:

RAM $270
CORSAIR XMS2 2GB (2 x 1GB) 240-Pin DDR2 SDRAM DDR2 800 (PC2 6400) Unbuffered Dual Channel Kit System Memory Model TWIN2X2048-6400 - Retail

But i'd like to find something a little less expensive.
Click to expand...

thats because you're spending 500$ on a case and mobo
 
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CrudOfCrow

Member
Jun 8, 2006
35
0
0
lol, that case is so ugly. haha. I decided to go with the GIGABYTE GA-965P-DS3 motherboard and cut off about 150 bucks... I like the case so im not switching, hahha! I think the ASUS motherboard was a lot cooler but...oh well.

heres what i have now:

Case $230
LIAN LI PC-V1200Bplus II Black Aluminum ATX Mid Tower Computer Case - Retail

MB $140
GIGABYTE GA-965P-DS3 Socket T (LGA 775) Intel P965 Express ATX Intel Motherboard - Retail

CPU $360
Intel Core 2 Duo E6600 Conroe 2.4GHz 4M shared L2 Cache LGA 775 Processor - Retail

GPU $315
SAPPHIRE 100149 Radeon X1900XT 512MB GDDR3 PCI Express x16 Video Card - OEM

Hard drive $100
Western Digital Caviar SE16 WD3200KS 320GB 7200 RPM SATA 3.0Gb/s Hard Drive - OEM

RAM $270
CORSAIR XMS2 2GB (2 x 1GB) 240-Pin DDR2 SDRAM DDR2 800 (PC2 6400) Unbuffered Dual Channel Kit System Memory Model TWIN2X2048-6400 - Retail

PSU $170
ENERMAX Liberty ELT620AWT ATX12V 620W Power Supply - Retail

DVD-RW $40
LITE-ON Black 16X DVD+R 8X DVD+RW 8X DVD+R DL 16X DVD-R 6X DVD-RW 5X DVD-RAM 16X DVD-ROM 48X CD-R 24X CD-RW 48X CD-ROM 2M Cache ATAPI/E-IDE DVD Burner With LightScribe - Retail

Total $1625



At this point, the only thing i would change is the RAM... not sure what kind to get. I was looking at G.SKILL 2GB (2 x 1GB) 240-Pin DDR2 SDRAM DDR2 800 (PC2 6400) Dual Channel Kit System Memory - Retail at $260 ...its only ten bucks less......
 
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acegazda

Platinum Member
May 14, 2006
2,689
1
0
Well now that he changed his MoBo to the gigabyte ds3, he can't run xfire anymore, so what's the point in getting a 620w psu? I'm not certain that a 400w psu will handle it... it might, but you could go with the enhance 5150gh now no problem, probably even the 5140gh as well as the 400w enermax liberty, both ahve 28amps and 30amps combined respectively.
 
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