P5W DH vdimm pencil mod - tRP 3 = tRP 4 ?

[eva2000]

Well i did it.. grew some balls and decided to do the vdimm pencil mod http://sg.vr-zone.com/?i=3876

The default multimeter measured vdimm was as follows

bios setting = default real = pencil mod result

AUTO = N/A = 2.040v
1.80v = N/A = 2.040v
1.90v = N/A = 2.040v
1.95v = N/A = 2.088v
2.00v = 2.007v = 2.118v (-0.03v droop) = 2.088v
2.05v = 2.066v = 2.178v (-0.03v droop) = 2.148v
2.10v = 2.110v = 2.228v (-0.03v droop) = 2.198v
2.15v = 2.173v = 2.296v (-0.03v droop) = 2.266v
2.20v = 2.231v = 2.340v (-0.03v droop) = 2.310v
2.25v = 2.273v = 2.388v (-0.03v droop) = 2.358v
2.30v = 2.312v = 2.430v (-0.03v droop) = 2.400v
2.35v = 2.375v = 2.478v (-0.03v droop) = 2.448v
2.40v = 2.419v = 2.524v (-0.03v droop) = 2.494v

N/A = forgot to measure :heh:

Anyway at 2.494v vdimm managed 540mhz 4-4-3-8 but 32M time came to about same as 540mhz 4-4-4-8 so i guess lack of a tad more vdimm slowed times ???? I did run 32M at least 8-9 times in same windows session for this time though and not fresh boot run.

540mhz 4-4-3-8 at 2.494v


vs

@540mhz 4-4-4-8 at 2.40v


So decided to pencil in some more vdimm

Revised multimeter measured vdimm:

bios setting = default real = pencil mod result

AUTO = N/A = 2.060v (-0.03v droop) = 2.030v
1.80v = N/A = 2.060v (-0.03v droop) = 2.030v
1.90v = N/A = 2.060v (-0.03v droop) = 2.030v
1.95v = N/A = 2.110v (-0.03v droop) = 2.080v
2.00v = 2.007v = 2.140v (-0.03v droop) = 2.110v
2.05v = 2.066v = 2.201v (-0.03v droop) = 2.171v
2.10v = 2.110v = 2.244v (-0.03v droop) = 2.214v
2.15v = 2.173v = 2.304v (-0.03v droop) = 2.274v
2.20v = 2.231v = 2.360v (-0.03v droop) = 2.330v
2.25v = 2.273v = 2.409v (-0.03v droop) = 2.379v
2.30v = 2.312v = 2.437v (-0.03v droop) = 2.407v
2.35v = 2.375v = 2.508v (-0.03v droop) = 2.478v
2.40v = 2.419v = 2.544v (-0.03v droop) = 2.514v

Have yet to test again but could the reason for similar times be due to tRP of 3 in bios is in fact tRP of 4 ???? or lack of vdimm ???




.

[Baraka]

DDR1081 = Nice

P5W must like G.Skill much more than my Corsair 8500C5's

What P5W bios are you using ?
Did you check for errors with Memtest ?

[eva2000]

yeah i memtest before i load windows

0801 bios

[Baraka]

yeah i memtest before i load windows

0801 bios

So going by your CPUZ screenshot your modules are:

http://gskill.de/product_sp2650.html ??

Nice speed for 6400 modules

[eva2000]

yeah those are the ones

[Gautam]

Don't remember tRP 3 shaving times much for me either. Of course more vdimm is never a bad idea.

[kiwi]

Don't say you never did pencil mods before

What chips do they have? D9xxx?

[eva2000]

Actually first time i ever did pencil mods heh

Gskill PC6400PHU2 HZ (0629 batch) = Micron DGHM

[Pjoeloe]

Eva, what about the mail you send to asus about the non deluxe p5b ? ( http://www.xtremesystems.org/forums/...=111400&page=3 )

nice mod !

[fhpchris]

Actually first time i ever did pencil mods heh

Gskill PC6400PHU2 HZ (0629 batch) = Micron DGHM

D9GMH