does all 7Vrxp MoBo's need to be at +10% Vcore to be stable?

[daveqb]

i ran a search but cant find anything on this

i remember reading someone posting on this.
he said that his mate had to run at Max +10% Vocre (1.92) in order to be stable, even at 133fsb.
he had an XP
and the same is true for me.

does everyone need to do this for stability?? and by Stability i mean running Prime95

mine wouldnt return errors, it would simply freeze when i started Prime95

at 1.92 it would never freeze and i could get to 140fsb without errors

everyone else the same ?

thanx

 

[SomethingBurning]

I am having the exact same problem with my system:

AMD 1800 Retail with heatsink and fan in a Giga-byte 7VRXP rev 1.1 Mother board (built in sound and LAN) with F7 version of BIOS
512Mb of "cheaper" memory
Enermax 430W powersupply with 2 fans, with fan speed set to max RPM (3000RPM)
Using a Full Tower Case with ventilation holes in the front, back(below P/S), and the side
Gainward GeForce 4/4400 Video with 29.42 drivers
1 IBM 60Gb harddrive
56xCDRom
3.5" floppy
56K U.S.Robotics Modem

I would love to know what is going on with this. I was starting to suspect the memory, but you are using brand name memory and still suffer from this problem. I hope someone can help us out.

 

[daveqb]

what problem exactly are u having ??
needed to pump max Vcore ?? or a poor overclock ?? or both

i remember reading it somehwere here before i bought the mobo. cant find it now though

there seems to be voltage problems with this mobo, but you have a 'good', i dont ,
hmmm

experiences ppl??

 

[SomethingBurning]

I do not have anything overclocked. Is there no one else out there that has had this problem?

 

[alanhall4]

I had all sorts of troubles with the board until I changed the vcore to +7.5%. Since I changed it, my system has been perfectly stable.

Are the any negative side effects when you up the vcore?

 

[daveqb]

only thing to wtch out for with upped Vcore is heat,

but if it isnt getting too hot, then your cool.

also shorten CPU life....
from 10 years to 7 maybe

 

[Bozo Galora]

I just saw a post on another forum that changing from a 300W to a 430W PSU solved all the guys probs with this board. He can now run everything at stock voltages.

 

[daveqb]

hmmm, i got a 450 watt PSU,

but its an Hairong

so maybe a 380 or 430 watt "TruePower" Antec i am looking at would do the trick!

sounds the K7S5A with all the voltage troubles it seems to have

 

[Insane3D]

Hey guys, sorry to hear you are having trouble. I've used a couple of these boards, one in a system I have here and one for a customer, and they have both been fine. Both were 1.1 boards. Let me list the configs I've used first...

Customer system:

1.2ghz Tbird @ 1.4ghz (9.5 x 148)
(2) 512mb Crucial PC2100 (regular, unbuffered, in DIMM 1 and 2)
GF4 Ti 4600 @ default speeds (EVGA)
Lite-On 24 x 10 x 40 CDRW
Pioneer 105-S 16X DVD (slot load)
40GB IBM 60GXP (OS)
60GB IBM 60GXP (Storage)
Hercules GTXP Sound
Sparkle 300w PSU
Floppy, F7 Bios


My system:

1800+ @ 2100+ (1.74ghz, 151mhz FSB)
(2) 256mb Crucial PC2100
64mb AIW Radeon 7500 (300/400)
Pioneer 16x DVD (106-S)
80GB Maxtor D740X "L" (OS)
40GB IBM 60GXP (Storage)
Philips Seismic Edge II 5.1 sound
Enermax 431W PSU
Floppy, F7 Bios

On both of these boards, they ran completely stable @ default voltages when the system was not o/c'ed. On my XP system, I have the vcore set @ +10% which gives me ~1.85V actual voltage. I'm using a Alpha 8045 with a 40CFM YS Tech, so temps are fine. 1.85vcore is only .1v above defaults, so I wouldn't worry too much. Above 1.9v it gets a little more touchy. It can run perfectly stable @ 150mhz FSB with only +7.5% in everything but Prime 95. On the customer system, I only needed to crank it to +7.5% for Prime to settle out. That system is only on a 300W PSU and it ran fine @ default speeds and voltages...Prime included. The PSU is a very high quality Sparkle, so that's probably why there are no voltage issues with it. Using a cheaper 300W PSU might cause problems.

As far as memory timings and voltages go I run the default timings and 2.7v on the first system, and I run Top Performance, Ultra, CL2, 1T and 2.7v on my system. The customer system didn't take to kindly to any agressive timings and this is typical of high memory density configurations like 1GB and up. My Crucial runs nicely with all the agressive timings @ 151mhz (302mhz) and scores in the 2100/2100 range in Sandra 2002 Pro.

What exactly is happening on your systems?

 

[daveqb]

hmm, well that gives hope to the rest of us 7VRXP owners

mine simply will not run at 1.74(+0%) , 1.83 (+5%) and 1.87 (+7.5%)

at any of these settings it frezzes within seconds of starting Prime95 AND it freezes in 3DMark2001SE (default Vid card settings) at the Pixel shader i think, cant recall exactly, but has froozen in other parts

will definately not complete 3D Mark2001SE at anything but +10% 1.92Vcore

the other thing is my AGOIA 0206 "Y" XP wouldnt do more then 140fsb stable

dud chip??
ran it in a Epox KT266A system and it got to 146 #default, so had more to give definately....

the strangest thing was that i could run an unloced T-Bird @174fsb ?!?! go figure!

but definately un-useable at anything but 1.92Vcore

can anyone say 60CPU temp??

 

[Insane3D]

Well, I have noticed that the board reads temps high...especially the board temp. I was working on the customer PC in a 68F degree room with the side off, and it was reading a 40C case/board temp.... The Gigabyte still has a socket thermistor in it and it doesn't read the core temp, but the temp of the bottom of the CPU packaging. I've also noticed it reads higher on XP's than Tbirds...I think this is mostly due to the components being on the bottom of the CPU on an XP and not on a Tbird. I think the board is reading the temp of those components on an XP versus even the bottom of the packaging.

It sounds like your board is undervolting to me...this is common on a lot of boards. They rarely give the exact voltage setting you set in the bios..usually a little more or less...depending on the board. For instance, on mine when I set +10%, it says it's giving ~1.9v..but when I read the actual reading in Windows it's actually more like 1.82 to 1.85v.

I've also got a 8KHA+ here running an unlocked Tbird @ 175mhz FSB without a hitch. I just got the 1600+ I ordered from Newegg last week and it's also a AGOIA "Y" with a fab date of "0213" (Week 13, 2002). I hoping to crank it right up to 175mhz FSB for a ~1.83ghz speed. Hopefully I won't even need to bother with unlocking. I've also got a Swiftech MC462A sitting around here, so cooling should be fine.

 

[daveqb]

yeah u probably have got that sorted with the temps, smart thinking !

my t-bird ran cooler too!

a definate undevolate, but seems relatively common with this board (see amdmb.com forums)

so say i did the volt mod and joined the L7's and ran it at like 2 vcore, would that be safe ya reckon??

 

[Chronic321]

I had the Gigabyte 7VRX and was only stable at +7.5% Vcore with my Thoroughbred, however the 7VRX at default VCORE detected my Thoroughbred at only 1.63V when it is rated at 1.65. Instead of dealing with the cooling troubles that become apparent when running a Thoroughbred at 1.74V I decided to just RMA the board, the AMD Athlon 2200+, and get brand new products. I got my new Thoroughbred yesterday and will get my hopefully stable Asus A7V333 in about 3 hours. I recommend to dump the board and get something with a functional voltage regulator compliant with a Geforce 4 Ti. I still don't know why any reviewers and even AMD did not come across the faults of this board, AMD even recommends it!

 

[daveqb]

yeah its getting a bad wrap hey

Gigabyte did a MS and released a product still in beta

 

[Insane3D]

so say i did the volt mod and joined the L7's and ran it at like 2 vcore, would that be safe ya reckon??

I wouldn't suggest it. Anything over 1.9v is really pushing it...2.0v would probably allow you to o/c better on the short term, but running it with the voltage that high will likely shorten it's life significantly faster...maybe under a year. But hey, it's up to you...

 

[nukefarmer]

a lot of people seem to be having problems with them..
check this thread at amdmb.com.. linky