- Joined
- Feb 2, 2002
- Location
- Karlsruhe, Germany
hi,
i have a (new) is7-e here, V 1.2 with blue "orb" nb-cooler.
bios 17
on it:
- sl6rz 2.40 ; fsb 533 (multi 18)
- 2 x 256mb kingston value-ram bh-5 (do ddr500 on epox in dual-modus)
- antec psu, modded 3,3v to 3,45v
- performance air-cooling
- several bios settings... game-acc all auto ... and much cmos clear's...
- using memtest-86 v3.0 on floppy for faster testing without long boot-time. test #5 is really hard. typeon keyboard: c 2 5 5 enter
i have very big problems running divider 3:4 and 4:5 for good memspeed.![bang head :bang head :bang head](/forums/oc_images/images/smilies/banghead.gif)
with 3:4 mem can do only ddr420 (cpu @ ~2800)
with 4:5 mem can do only ddr445 (cpu @ ~3200)
with 1:1 mem can do stable ddr195 (cpu @ 3510) (with game-acc. F1 too)
all setting's are the same, only change the dividor per "n/b strap cpu as"
with all the mods the same poor result... the first two.
very short, i try in follow sequence:
(measured all with multimeter)
- mod the vmem: only resistor and also hipro5 #2 voltage divider to 3.20v, latter works better ;-)
- try bios 16 and 15
- lapped my northbridge and add asiii
- change ram to 2 x 256mb xms 3500c2
- try my modded P4m, (200fsb ; bsel1 is emoved)
--- i would not give up ---
- mod the ddr vtt: same as vdimm, but to half ddr 1,52v (cutting trace on board bottom)
- mod the (possibly) northbridge-vcore from 1,45v to 1,65 (not vagp) (LM 358 "agp-side" ; near PLL )
ooohhh damnit, i try all !!
the absolute hit is the parts running ddr500 with 3:4 on my epox 4pea (i845pe) "easy".![Crying :cry: :cry:](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
is the problem on is7 only ?
or a bad implement for 533er cpu's... ?
anyone idea's....... pleeeease help
----- i have no "C" chip here to test -----
i have a (new) is7-e here, V 1.2 with blue "orb" nb-cooler.
bios 17
on it:
- sl6rz 2.40 ; fsb 533 (multi 18)
- 2 x 256mb kingston value-ram bh-5 (do ddr500 on epox in dual-modus)
- antec psu, modded 3,3v to 3,45v
- performance air-cooling
- several bios settings... game-acc all auto ... and much cmos clear's...
- using memtest-86 v3.0 on floppy for faster testing without long boot-time. test #5 is really hard. typeon keyboard: c 2 5 5 enter
i have very big problems running divider 3:4 and 4:5 for good memspeed.
![bang head :bang head :bang head](/forums/oc_images/images/smilies/banghead.gif)
with 3:4 mem can do only ddr420 (cpu @ ~2800)
with 4:5 mem can do only ddr445 (cpu @ ~3200)
with 1:1 mem can do stable ddr195 (cpu @ 3510) (with game-acc. F1 too)
all setting's are the same, only change the dividor per "n/b strap cpu as"
with all the mods the same poor result... the first two.
very short, i try in follow sequence:
(measured all with multimeter)
- mod the vmem: only resistor and also hipro5 #2 voltage divider to 3.20v, latter works better ;-)
- try bios 16 and 15
- lapped my northbridge and add asiii
- change ram to 2 x 256mb xms 3500c2
- try my modded P4m, (200fsb ; bsel1 is emoved)
--- i would not give up ---
- mod the ddr vtt: same as vdimm, but to half ddr 1,52v (cutting trace on board bottom)
- mod the (possibly) northbridge-vcore from 1,45v to 1,65 (not vagp) (LM 358 "agp-side" ; near PLL )
ooohhh damnit, i try all !!
![Attention :attn: :attn:](/forums/oc_images/images/smilies/head_bang.gif)
the absolute hit is the parts running ddr500 with 3:4 on my epox 4pea (i845pe) "easy".
is the problem on is7 only ?
or a bad implement for 533er cpu's... ?
anyone idea's....... pleeeease help
----- i have no "C" chip here to test -----