I agree that the solderless methods might be neat for some mods like simple VDimm Mods or something like that, but for the 5V as Vdimm-Source Mod this is absolutely not adviseable. In case of this mod you need a permanent and low resistance connection between the cable and the MOSFET source-pin. A grabber's connection-resitance increases over time and that could lead to serious problems here. Furthermore as explained in the guide above, there will be quite some amps flowing through that cable and I doubt that a non permanent connection like a grabber could take that.DanTheBanjoman said:
Golden Flamer said:Great mod celemine!
I see that my max VDIMM Voltage oin this board is Vsource - 0,2V. My 3,3V is 3,35V, so my max VDimm is about 3,16V without any mod. With this voltage my Best BH-5 RAM (768 Mb Total, 1x512Mb Corsair PC3500 stick, + 1x256Mb Mushkin Lvl2 PC3200 Bh-5 Stick) can do about 251MHz at most aggressive timings.
I don't have time to analize the circuit, but I think ABOUT A LINK BETWEEN PSU 3,3V RAIL and VDIMM MEAUSER POINT ONE THE MOSFET PIN. WHAT DO YOU THINK ABOUT THIS, IS THIS POSSIBLE?
If This mod work I think RAM become always filled with full 3,3V RAIL, This should cut off all the RAM's Voltage Supply Circuit. VDimm become fixed at the 3,3V rail value.
Is this dangerous?
Normally the RAM shouldn't draw more than 10-15W. I'd guess (I don't know that for sure) highly overvolted and overclocked RAM should reach a max. of 30W. That means that while drawing it's power from the 3.3V line, it should need something between 3-5Ampere. But on the 5V line the amperage would be lower as the wattage stays the same, but the voltage is higher. So it should be about 2-3Ampere. You see those numbers are far from totally stressing a good PSU.Golden Flamer said:Thank you Celemine, I understand.
Previous I want to do this 3,3V direct voltage mod because I don't want to let my PSU's 3,3V rail USELESS and don't want to stress to much my 5V rail, beacuse my 5V rail is already very stressed by my hungry Video Card, an ATi Radeon 9800 PRO All-in-Wonder. Unfortunately this Video card, expecially when is extreme overvolted and overclocked at 472/796 like mine, eat a lot of watts from 5V rail :|
But my PSU is not a weak PSU: It's a Thermaltake buttefly purepower 480W.
Do you know how much Watts or ampere a memory like my BH-5 should eat? (approximately).
I use 768Mb of total BH-5 based RAM, 1x 512mb of corsair PC3500 and 1x 256Mb of Mushkin Level2.