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What Vcore is a V4?
I have two v4's? with different cpu's...

New MessageWhat Vcore is a V4? (modified 0 times) alcuin
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Hi all,
I borrowed my friend's i-opener, and it appears to be a V4a; Rise chip at 2.8v, no sw4. So does it run at 2.8v natively? My I-opener has a winchip-1 in it; but other than that it seems pretty similar; I think its a V4 also, no goop, no cut pins; but the Winchip runs at 3.3v? So is my board stuck at 3.3v? Is my friend's IO better? Thanks!!!

-e

03-24-2002 13:09:02

New MessageRE:What Vcore is a V4? (modified 0 times) Ragnar1
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Winchip runs at 3.3V vcore. Rise (V4's and V5's) run at 2.8V vcore. To change the vcore voltage on a V4a you need to add a resistor to the motherboard. Details are in the moderated technical section. To change voltage on a unit with the winchip requires a slightly different mod. Also found in the technical moderated techinical sections. Read up and have fun. Happy Hacking.

Ragnar

03-24-2002 13:15:06

New MessageRE:What Vcore is a V4? (modified 0 times) alcuin
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Thanks for the info Ragnar;
The search doesnt seem to pull up all the threads in the board. I still have a couple questions;
Is it possible for a V4 to come with a Rise chip and no SW4? (Does that mean the mobo is just hardwired for 2.8v VCore?)
Would a winchip work in a V4, or does it not support 3.3v VCore?
Thanks so much!

-e

03-24-2002 18:42:23

New MessageRE:What Vcore is a V4? (modified 0 times) Ragnar1
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I have never had a V4a, but I think that The Rise was part of the definition that seperates V3's from V4's and V5's. All the info you need can be found the moderated technical section.
When you use the search function, narrow down the search by using more that one key word. Two key words will return a number of post, while three key words will return just a couple.
Your board is only stuck at 3.3V's if you choose NOT to modify it. The directions for modifying all versions is in the moderated technical section. On the start page, the moderated technical section is "Two doors down". ;o)
03-24-2002 19:09:59

New MessageRE:What Vcore is a V4? (modified 0 times) Ragnar1
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P.S. A Winchip is not a straight drop in replacement for the Rise and vice-versa.
03-24-2002 19:12:51

New MessageRE:What Vcore is a V4? (modified 0 times) Linuxguru
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Not meaning to beat up on Ragnar, he's usually helpful and reliable with his tips - however, in this case it's slightly inaccurate.

1) A V4a comes with a Rise chip, split-voltage planes, and no SW4 (fixed 2.8v Vcore).

2) A WinChip from a V3 (or earlier) will also work in a V4a/b or V5 with no mods. This little bit of magic happens to work because a WinChip was designed to be *both* Socket-5 and -7 compatible, i.e. its Vcore can range from 2.8v to 3.45v. It's the only Pentium -class chip with this ability to work in both single-plane and split-plane boards.

3) A Rise MP6 from a V4 will however not work in a V1, V2 or V3 (with a single-voltage plane), unless the split-plane mod has been performed (search the postings for info on this mod).

4) Generally, the split-plane (V4 and later) units are more versatile in CPU choices. You can mod the V1/V2/V3 to obtain the same versatility as the V4/V5.

03-25-2002 00:09:08

New MessageRE:What Vcore is a V4? (modified 0 times) alcuin
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THANK YOU LINUXGURU:
That's exactly what I was wondering; specifically #2 was pretty confusing me. There is very little mention of #1 as well. Thank you for being so all-knowing!!
03-25-2002 00:15:41

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