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pcb rev2 should support higher vcore, may i ask what kinds of oc's have you got with 2.4C (if u have one), i can get 3.0 stable, anything over 3.07 hardly allows me to even get to bios screen and have to do the INSERT key clear cmos trick. Very handy btw. (why those reviews complained about poor position of cmos jumper when it's not even needed..) I'm using kingston valueram 2.5 400mhz. Edit: The "Turbo/PAT" thing in latest bios only increases score by little less than 100 in sandra mem bench.. What are your results? Those reviews of asus,abit etc board say that the similar feature boosted mem performance by lot more, can't remember was it around 500 or 1000.. I'm getting around 4400 with 2.4 and 5300 with 2.4@3.0
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Yes i have 2.4C watercooled max is 3.7GHz, 3.6GHz rock solid, watertemp around 20c. I use 2 stick of corsair´s pc3500 256mb. 2.4C info SL6WF FPO/PATCH: L310A700 VERSION:C30333-002 Pack date 04/30/2003 PAT is GREAT!! here some mem results =) New bios whit PAT http://service.futuremark.com/compare?pcm=1353188 Old bios http://service.futuremark.com/compare?pcm=1351587
__________________ 2.4C@3600MHz 1.52V *Water* Epox 4PDA2+ 2*Corsair PC3500 256Mb 3.2V DDR467 Cas 2-5-2-2 R9700 Pro 400/350 no mod´s *AIR* |
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![]() Hi, thats impressive ![]() Edit: WOW hehe! i have EXACT same batch,version,pack date! It's probably the cheap kingston value ram i went with that keeps me getting above 3.05 ghz..
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![]() hi..Benchmarks coming soon, tomorrow BTW new sandra is out. u can see from sandra if pat is enable (Sandra Standard MAX3! 9.73 ) http://www.sisoftware.co.uk/index.ht...86&langx=en&a=
__________________ 2.4C@3600MHz 1.52V *Water* Epox 4PDA2+ 2*Corsair PC3500 256Mb 3.2V DDR467 Cas 2-5-2-2 R9700 Pro 400/350 no mod´s *AIR* |
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I downloaded this new version, couldn't find any mention of Performance Acceleration Technology (PAT).. There is info in cpu page about "Include CPU PAT Information - show Page Attribute Table settings." according to help file. This clearly has nothing to do with the other PAT ![]()
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__________________ P4 2.4@3.3 (18x275, 1.55v) EpoX 4PCA3+ rev.1.2, 2x256 DDR450@440 A-Data (5:4, 2.5-7-3-3) |
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Heh i believe it's there, but after just checking again, i only have items Speed,Width,Maximum MemBus BW (only 3216 estimated) under the Logical/Chipset 1 Memory banks item. This is with Chipset FSB 4x201 (804) and chipset max bus bw estimation is 6432 MB/s for some reason hehe.. I'm using default optimized setting atm but cause my new xp installation on a Maxtor 120 SATA hdd went boom (hdd broke after 2 day of use), i'm currently using old XP installation with Standard PC, so Hyperthreading / APIC isn't enabled, might affect somehow.. This is with optimized setting, i'll go enable the turbo etc again to see whether it brings the PAT item, which it didn't last time. oh btw did you notice this on vr-zone.com ? Best Overclockability (award): EPoX 4PDA2+ deserves this title since it delivers the best performance from overclocking and maintain a very good stability under high FSB operation. Performance award still didn't go to Epox cause the PAT of Epox didn't help as much as in asus,abit..
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I have no personal experience from 4PDA2+ but I looked that pdf and I can only make some suggestions what to try. No one of my friend have this mobo at the moment so I can not test any of my tips on it. There are several pins that will affect output voltage: VID 0-5 inputs that tell the controller cpu's required voltage OUTSEN (23) one of the voltage sense pins (this is for current balancing but can affect voltage too) FB (7) this is major voltage FeedBack pin that is used for voltage sensing ERROUT (5) is voltage error amplifier output and this can be used to tweak voltages Best way to mod is to make vid pins user configurable (or atleast a few of them) First, what cpu are you using. If you use a "new" P4 then it could use VRD10 voltages (page 8) and maximum is 1.6V what you can set from vid. If you use older P4 then it uses VRM9.x and goes up to 1.85V (page 7). If your cpu's default is 1.5V vid lines are (from 4 to 0) 0,1,1,1,0 and if you ground vid 3 so you have 0,0,1,1,0 your default voltage is 1.7 look page 7 of pdf. This is the easies and most secure way of tweaking voltages. Best way is to use 0.5K to 1K resistor to groud them. Check controllers pin 11 (vid 3) I assume that FB line (pin 7) from controller is hardwired to cpu socket (no resistors) so motherboard cutting is nessessary if this is tweaked. This should be the last to try if anything else is not working. Basically you have to cut motherboard trace and solder a resistor over the cut and another resistor from FB pin to ground. These resistors should be pretty small, about 10 ohms over the cut and about 100 ohms from FB to ground (10/(10+100)) gives you 9% more voltage. Setting proper resistor from errout pin to ground can be used to tweak voltage. You can put a 100K potentiometer to this and start to decreasing resistance and look if there is any changes in voltage. If you have to go below 1/3 settings at potentiometer then you should change smaller one and continue from there. I suggest that you test this with some cheap cpu first because there is a possibility to kill it with too small resistor and overvoltage. I suggest that you try to mod those vid lines first and see if that works. Look your cpu's Sspec.
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Well... no new bios will bring the Epox 865PE rev 1.0 more vcore than 1.60v "We would loooovee to give you a BIOS with larger Vcore setting, no kidding...but the hardware sets the limit. The RD just spent half and hour explaining to me the whole story again, that's why I'm late in replying. We designed too strictly following Intel's specs... there's no way the Vcore can go beyond the VR10 limit of 1.65V. You might be wondering why we managed to do it on 4PCA3+. That's because v1.1 and v1.0 of that board is using an older date code of PWM controller and we found a way to break the barrier. But v1.2 uses a new batch of the PWM that somehow doesn't "leave the door open".
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Well.. look @ the good side, the mobo will support the next gen Intel processors (prescott) "All or almost all mainboards based on i865PE and i875P chipsets are not VRM10.0, FMB1.5-compatible, that is why you will not be able to use Intel Prescott chip on those platforms. As a result, mainboard makers have to redesign their products. Beginning from the second half of August, at least one mainboard maker indicates appearance of its mainboards revision 2.x that are compliant to FMB 1.5 of Voltage Regulator-Down (VRD) 10.0 Design Guide. See our July, 11th news-story for more information on the matter." Xbit labs This POS mobo, uses the VRM10 mode.. so ...Prescott compatible.
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Thread | Thread Starter | Forum | Replies | Last Post |
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