FSB, memory bus, and 1:1 ratio

[dorsetknob]

Slightly off topic But

So you can use a socket 771 CPU in a socket 775 mobo with a little mod? <incredulous look> Ok, but it's the first time I've heard of it!

Found this Blast from the past
http://www.techpowerup.com/forums/threads/where-can-i-find-one-of-these.184235/

 

[rtwjunkie]

@qubit, I'm sure @Sasqui can shed some more light on the use of 771's in a skt 775. He's using the mod in a motherboard he got from me.

 

[Sasqui]

@qubit, I'm sure @Sasqui can shed some more light on the use of 771's in a skt 775. He's using the mod in a motherboard he got from me.

Ok, I did the mod with the PQ5 from @rtwjunkie ... Xeon 5470 that has a multiplier of 10x, so I have the FSB to 410, equating to 4.1Ghz.

The memory multiplier on the ASUS board is pretty flexible. At that speed I can set it somewhere around the DDR2-400 mark (or higher or lower). I'd have to turn on the rig and take a peek what I've got now...

The guide I used to find the right MB and do the mod: http://www.delidded.com/lga-771-to-775-adapter/

 

[mist303]

So you can use a socket 771 CPU in a socket 775 mobo with a little mod? <incredulous look> Ok, but it's the first time I've heard of it!

I think there lies the answer to your problem though. That mobo and CPU aren't made to work with each other, so even though you can coax them into working together, it doesn't surprise me that some things aren't going to be quite right, therefore this FSB ratio glitch would be a prime candidate for such a glitch.

Wasn't a glitch, mate. I just skipped an option on my motherboard and left it Auto while OCing everything else.

PS: I say to your pic, never gonna happen. On March 19, Gabe Newell, when asked about Half-Life 3, replied: "The only reason we'd go back and do like a super classic kind of product is if a whole bunch of people just internally at Valve said they wanted to do it and had a reasonable explanation for why [they did]." He called it a super classic...

 

[Aquinus]

Is there a way I can reach 1:1 ratio?

At stock, that would be the DDR2-667 memory divider. Running that stock 667 divider will give you 800MHZ DDR2 when you push the FSB up to 400Mhz from 333Mhz.

Stock FSB: 333Mhz
Stock memory: 400Mhz (800Mhz effective)
Ratio: 400:333.5 => 12:10

Drop memory divider to do 667 at stock:
Stock FSB: 333Mhz
Underclock memory divider: 333.5Mhz (667Mhz effective)
Ratio: 333.5:333.5 => 1:1

Overclock FSB to 400Mhz:
OC'ed FSB: 400Mhz
Underclocked memory divider: 400Mhz (800Mhz effective)
Ratio: 400:400 => 1:1

 

[qubit]

Wasn't a glitch, mate. I just skipped an option on my motherboard and left it Auto while OCing everything else.

PS: I say to your pic, never gonna happen. On March 19, Gabe Newell, when asked about Half-Life 3, replied: "The only reason we'd go back and do like a super classic kind of product is if a whole bunch of people just internally at Valve said they wanted to do it and had a reasonable explanation for why [they did]." He called it a super classic...

Ok, I didn't see your post where you'd found the problem so good for you. Glitches like this are still possible in a general sense, though.

Glad you like my avatar.

So, will HL3 happen? I think it's 50-50; I certainly wouldn't place a bet either way. Regardless of what Newell's said in that quote, he left it on a massive cliffhanger and I reckon if he sees a big enough profit in finishing the story he'll do it, which I think will happen someday. Just look how people are still talking about this game years after EP2. It's likely to be a long while though.

 

[xvi]

Lol, I modded my motherboard . It works pretty well too. You can google the mod as it is widely used now.
Here's proof that I'm really using this setup ( just in case )

I too have done this. Have to be pretty careful when cutting up the CPU socket, but works surprisingly well otherwise!

That mobo and CPU aren't made to work with each other, so even though you can coax them into working together, it doesn't surprise me that some things aren't going to be quite right, therefore this FSB ratio glitch would be a prime candidate for such a glitch.

Not specifically designed for each other, true, but compatibility shouldn't be too bad.

 

[mist303]

I too have done this. Have to be pretty careful when cutting up the CPU socket, but works surprisingly well otherwise!

I actually bent one of the pins by accident. I have no idea how it worked afterwards

 

[Aquinus]

I actually bent one of the pins by accident. I have no idea how it worked afterwards

It could have been an un-used or an extra ground or power pin. Sometimes you can get lucky. Being a skt775/771 setup, you don't have to worry about the pin being a PCI-E or DRAM pin, since the these boards still have an MCH.

I would consider yourself lucky.

On topic though: Try jumping the memory divider down by one in the list the BIOS gives you, that should get you the 1:1 if you haven't changed it already.

 

[Sasqui]

I actually bent one of the pins by accident. I have no idea how it worked afterwards

I used a "hot knife" to cut the plastic socket tabs to avoid bending pins... despite that, I still slipped and bent a few (gently) but got them right back. As @Aquinus said, consider yourself lucky. The trickiest part was getting the sticker on the CPU right, that took a few trials, a very good loupe (high powered magnifying glass), and a very good pair of surgical needle nose tweezers.

Anyway, as mentioned, the BIOS should have a speed setting for the memory, or divider options... both do the same thing really, they set the FSB:RAM divider. Another option is bumping up the voltage, but do that carefully.

 

[mist303]

I used a "hot knife" to cut the plastic socket tabs to avoid bending pins... despite that, I still slipped and bent a few (gently) but got them right back. As @Aquinus said, consider yourself lucky. The trickiest part was getting the sticker on the CPU right, that took a few trials, a very good loupe (high powered magnifying glass), and a very good pair of surgical needle nose tweezers.

Anyway, as mentioned, the BIOS should have a speed setting for the memory, or divider options... both do the same thing really, they set the FSB:RAM divider. Another option is bumping up the voltage, but do that carefully.

I actually ordered the processor with the sticker already on. I asked the online seller to do it before sending the item .

To the divider thing, it's been successfully done some posts ago (check page 1). Thanks though