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EPoX MotherBoards EPoX Intel and AMD Motherboards.


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Old 13th May, 2003, 09:25 PM
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8RDA+ rev 1.1 VDD mod results...

I had a friend of mine do the mod to my board:

8RDA+ rev 1.1 with A3 NB and A3 SB

Soldering went no problem. Put a 1K Ohm resistor on to give me a resulting 1.76 VDD. (was 1.58)

Running 3dMark 2001SE now at 10 x 200 dual channel with OCZ PC3200 EL ram at 7-3-3 CAS 2.0 and working fine Prior to that I could not get a stable FSB over 195.

Only took him about a minute to do it...

I put active cooling on the NB and passive on the SB....should I also do the mosfets?

I'll do more testing now Need to run 3dMark looping and prime 95.
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8RDA+ rev 1.1, A3 SB, A3 NB
1/29 bios, vdd modded
ThermalTake 420Watt PS
Athlon XP 2100+ tbred "B" 0249
12 x 200.5 DC sync = 2005MHz
vcore: 1.63, vdimm: 2.74, vdd: 1.76
(2x256) PC3200EL OCZ 11-3-3 CAS 2
Nvidia GeForce 3 64 meg DDR
80 gig 7200 RPM WD 8 meg cache
18.1" NEC LCD 1830
Windows XP SP1
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Old 13th May, 2003, 10:22 PM
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Mosfet cooling is only required if u wish to use high Vcore and have adequate CPU cooling.
Cooling them never hurts of course.
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Old 13th May, 2003, 10:23 PM
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Sweet!
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Old 14th May, 2003, 09:35 PM
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That does it...

Where's my soldering iron...?
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Old 15th May, 2003, 01:04 AM
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just did a vdd mod today with a variable resistor!
unmodded fsb = 225@1.568v
modded fsb = 233@1.86v

currently running 1*pc2700 samsung sync with 230fsb.
don't ask me how but the ram is running at that speed regardless of default 166mhz.

hopefully i will be able to do better with some pc3500 or 3700 in dual channel mode.
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Old 15th May, 2003, 01:07 AM
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U guyz are NUTS !!
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Old 15th May, 2003, 01:19 AM
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Quote:
Originally posted by Elisha
just did a vdd mod today with a variable resistor!
unmodded fsb = 225@1.568v
modded fsb = 233@1.86v

currently running 1*pc2700 samsung sync with 230fsb.
don't ask me how but the ram is running at that speed regardless of default 166mhz.

hopefully i will be able to do better with some pc3500 or 3700 in dual channel mode.
I think you'll find that even with better memory chances are your FSB will be lower when running dual channel mode, I had to to the Vdimm/Vbt mod (3.2v to the ram) just to get my board to do 220+ FSB DC, bottom line is DC is a different animal to SC
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| Abit NF7-S V 2.0 | 1.8v Vdd (modded) | XP 1700+ DLT3C 0319 1.95v @ 2495 Mhz 217 x 11.5 |
| 2 x 256 TwinMos w/ Winbond BH-5 DC 10,2,2,Cas2 @ 3.0v Vdimm (modded) |
| Connect3d ATI Radeon 9800 Pro | Innovatek Water Cooled CPU & NB, actively cooled SB |
| Adaptec 39160 | Seagate Cheetah ST318406LW | ST336706LW | Lite-on CDRW |



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Old 15th May, 2003, 01:25 AM
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planning on the pc3700 OCZ but the crown favourite seems to be kingston hyper x!
just want something to run sync with higher fsb
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Old 15th May, 2003, 03:24 AM
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BTW, some updates on my vdd mod results...

My Athlon XP 2100+ "B" core CPU runs 100% stable at 10x200 at stock vcore (1.63), and 1.76 VDD. Runs at 40C full load, 30C board temp. Ambient temp is 23-25C. I have an older Global Win CAK-38 full copper cooler with 60mm fan (variable speed), right now at 4100 RPM to keep it a bit quiet (can go upto a jet-scream 6700 RPM ....)

I've just ordered an Aerocool Glacier II cpu cooler from www.3dcool.com and I hope that is a bit quieter...

Also 11x200 works fine, but I have to up the vcore to 1.775 (resulting to 1.82-85 with MBM5). And the temps rise then approaching 50C, (depending on how much I turn up the cpu fan 45C to 49C). But I like to keep a semi quiet system so I think I'll keep the system at 10x200 with default vcore, keeping that fan RPM down...

3dMark 2001SE and prime95 stable, too.

I also just feel that generally when I try to overclock the system seems more stable with the VDD mod. That extra juice to the NB really seems to give the board stability at higher FSB and CPU speeds. Just make sure you put some extra cooling on it

I haven't done anything with the mosfets now, but will probably put on some passive sinks. Damn hard to find cheap ones that will fit, so I'm going to cut up some old pentium sinks with a dremel (or get my buddy to do it for me....hehe - he did a great job on the VDD mod!)

I think I'll be satisfied with this board until the Athlon 64 boards and chips are out!
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8RDA+ rev 1.1, A3 SB, A3 NB
1/29 bios, vdd modded
ThermalTake 420Watt PS
Athlon XP 2100+ tbred "B" 0249
12 x 200.5 DC sync = 2005MHz
vcore: 1.63, vdimm: 2.74, vdd: 1.76
(2x256) PC3200EL OCZ 11-3-3 CAS 2
Nvidia GeForce 3 64 meg DDR
80 gig 7200 RPM WD 8 meg cache
18.1" NEC LCD 1830
Windows XP SP1
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