Moving to LGA-775 - differences with previous systems?

[MIDIman]

I think its time to go with an LGA-775 based system. Other than sata power cabling and PCI express, are there any other major differences that I have to watch out for?

1) I could've sworn I read someplace that LGA-775 motherboards were going to have a different or added type of power connector and we were all going to need new power supplies...or was that BTX?

2) Does DDR2 require two sticks? Assuming no.

I'm also assuming the 925x platform is the way to go? Like the Abit AA8?

 

[CalvinHobbes]

The Intel 775 boards have a 24 pin power connector instead of the 20 pin connector.
As far as DDR2, you can run with just one stick AFAIK.

 

[MIDIman]

Originally posted by: CalvinHobbes
The Intel 775 boards have a 24 pin power connector instead of the 20 pin connector.
As far as DDR2, you can run with just one stick AFAIK.

Crap. Are new power supplies supporting this? Is it required or can you still run older PSUs? i.e. would Zalman's latest PSU work ok?. Is this just the extra 4-pin connection that most PSUs already provide?

I just haven't seen any PSUs listed as "LGA-775 compatible" or something.

Thx.

 

[MIDIman]

Is this statement related as well? Saw it on Directron

What is EPS12V? EPS12V is a special, non-ATX standard adopted by the Server System Infrastructure (SSI) group to provide a more powerful and stable environment for critical server-based systems and applications. EPS12V equipment is not compatible with standard ATX or ATX12V PCs found in homes and offices. Power supplies built to the EPS12V standard include a 24-pin motherboard power connector and an 8-pin +12V connector. (Source: Antec)

 

[CalvinHobbes]

I think you can use an adapter to that will allow a 20pin to 24 pin connection. The 24 pin does not include the 12V 4 pin connector that was introduced with the P4 CPU's. It's 4 extra pins on the mainboard power connector. Look at the pictures of the 775 boards on newegg.

For example:
http://www.newegg.com/app/Show...mage=13-127-180-03.JPG

 

[imported_Phil]

You don't need the 24-pin connector. The 915/925 board work perfectly fine with the regular ATX 20-pin connector; I've evaluated them at work. The last four holes are left blank.

The only other thing is that the reference 915GAG board I was testing used a 20-pin ATX connector, a 4-pin 12volt ATX connector, and a 4-pin regular Molex connector for power.

 

[MIDIman]

Thank ye all - not sure if I should worry about the adapter with normal ATX PSUs or not due to conflicting replies between Dopefiend and CalvinHobbes. Being a fan of Calvin and Hobbes, and not as much a fan of dope, I'm tempted to go with making sure I have the extra 24-pin to 20-pin converter (less than $10 according to pricewatch) Its all good...


Off to motherboard reviews. Is the Abit AA8 at newegg I've listed OK, or are there any other recommendations? Again, assuming the 925x is worth the cost.

 

[Baldy18]

Originally posted by: Dopefiend
You don't need the 24-pin connector. The 915/925 board work perfectly fine with the regular ATX 20-pin connector; I've evaluated them at work. The last four holes are left blank.

The only other thing is that the reference 915GAG board I was testing used a 20-pin ATX connector, a 4-pin 12volt ATX connector, and a 4-pin regular Molex connector for power.

This is also what I've found in my dealings with them as a system builder. I've say I've done about 6-7 socket 775 systems now and they work without the 24pin connector fine. I even used a 250W power supply and didn't have issues (not suggested for long term solution).

 

[Jtardiou]

Hey if you need a motherboard I bought the wrong one on EBAY and its a LGA775. I bought it for like 135 dollars, its brand new/never been opened. ill sell it for like 90-100 bucks or something, just pm me if ur interested

 

[imported_Phil]

Originally posted by: MIDIman
Thank ye all - not sure if I should worry about the adapter with normal ATX PSUs or not due to conflicting replies between Dopefiend and CalvinHobbes. Being a fan of Calvin and Hobbes, and not as much a fan of dope, I'm tempted to go with making sure I have the extra 24-pin to 20-pin converter (less than $10 according to pricewatch) Its all good...

:roll:

 

[imported_Phil]

Originally posted by: Baldy18

This is also what I've found in my dealings with them as a system builder. I've say I've done about 6-7 socket 775 systems now and they work without the 24pin connector fine. I even used a 250W power supply and didn't have issues (not suggested for long term solution).

Yeah, I found the same thing - a 300W supply was losing juice on the 12v rail when the system was being seriously stressed; I made the firm recommendation that a 350W supply be used as a minimum for anything over 3Ghz/Prescott/LGA to give a decent margin of error.

Heck, I've been replacing 200-250W mATX PSUs of late that have been powering 3.2Ghz Prescott-core P4s... no wonder they're dying so quick. If we could get anything bigger in a mATX format, we'd be laughing, though.

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