probably phase 5 means 4+1 after all..Quote:
Originally Posted by Entropicity
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probably phase 5 means 4+1 after all..Quote:
Originally Posted by Entropicity
Are you sure about that? I've never heard or seen this model. Could you provide me a link to it?Quote:
Originally Posted by xoqolatl
Here you go: http://www.gigabyte.com.tw/Products/...ProductID=3096
I used it in my Regor and Callisto review.
http://r1.pclab.pl/zdjecia/artykuly/...d3p_angle1.jpg
http://r1.pclab.pl/zdjecia/artykuly/..._ud3p_gora.jpg
Here's the PWM area with integrated mosfets:
http://xs140.xs.to/xs140/09234/gb_770_pwm940.jpg
Dude, I believe its just marketing of normal mosfets. Maybe better components but nevertheless it aint driver mosfets.
Here are some shots of Driver Mosfets. Notice they have combined the 3 components into a single chip for each phase?
http://images.bit-tech.net/content_i...se/drmos-8.jpg
http://live.msi.com.tw/marketing/drm...w_photo_03.jpg
You are right, these are not driver mosfets. My bad :slapass:
But I'm sure I have seen such fets somewehere not on MSI board...
No worries man. :)Quote:
Originally Posted by xoqolatl
Another company that has used non traditional power circuits is DFI. I believe they were one of the first to use digital pwm mainstream and it seems EVGA has started to do so too.
Just curious how DrMOS and Digital PWM stack up to traditional mosfets since Asus and Gigabyte seem to swear by them (in huge numbers) in their top range boards.
ASUS M4A89GTD PRO/USB3
is that a true 8+2 Power Design?
http://lab501.ro/wp-content/uploads/...-12V-power.jpg
http://www.ixbt.com/mainboard/asus/m...o-usb3/vrm.jpg
here's some data on the design:
[EPU (ASP0902) PWM + PEM (ASP0910) PWM + uP6282AD Driver]
ASUS M4A89GTD Pro/USB3 Intel CPU from the mainboard, the power supply have been used primarily by a combination of EPU and the PEM CPU up 8Phase, memory support 2Phase configuration has 8 +2 Phase Power Supply. Also, Phase 2, the MOSFET and 5 per uP6282AD MOSFET driver is a combination. EPU processor clocks and voltages depending on the load, lower power consumption, ASUS EPU-6 engine that can be reduced (CPU, memory, chipset, HDD, VGA, paenkeonteurol management) is the key.
they say..
ASUS new improved ASP0902 series PWM chip, with PEM form 8 +2 Phase Power Supply System.
http://file.bodnara.co.kr/webedit/ha...o/img_6242.jpg
to me, 8+2 phase design is to evenly shared the load over a parallel channel
so that each MOSFET only take up the load half of what 4+1 phase design is taking;
hence, this would lower the operating temperature of MOSFET while user pushes the voltage when overclocking.
afa8ik there is not true 8 phase PWM......they are all 4+4+2 or whatever....thats how it works.......ati once made an extremely well laid out true 6 phase back in rd 480 580 days.....
Quality phases mean more than quantity
The Legend Speaketh (TM)Quote:
Originally Posted by hipro5
This has gotten me to read thru old Grouper/Manta/Sturegon threads, but I could only find 4 phase PWM´s. Wich board hade the 6 phase PWM?Quote:
Originally Posted by chew*
That is the same controller used by Biostar for the TA790GXE 128M and presumably all the other 4+1 boards they released at the same time. The TA890FXE is now on the L6717 controller. My experience with the L6740 from my TA790GXE 128M was that it was best to disable the active phase switching when overclocking. With phase switching enabled I could crash/shutdown the board stopping a Prime95 run whereas the same frequencies and voltages were perfectly stable in the same scenario with phase switching disabled via the BIOS.Quote:
Originally Posted by G.Foyle
Feels like I am nagging, but how about the ASUS Crosshair IV Formula? Is that also a 4+1 + 4+1 phase design?Quote:
Originally Posted by chew*
And what about those Intel board with 24 and even 32 phases are those 6 and even 8 pairs of 4-phase designs? :shocked: Seems kinda stupid to me... Not disbelieving you, I am sure this kind of marketing works great.
Quote:
Originally Posted by Smartidiot89
IMO, if they make the power phase parallel, it helps when you up the voltage to a certain level since the current were shared by more MOSFET, those MOSFET definitely would run cooler than lesser phase
ASUS/GIGABYTE's 8+2 phase is indeed a 4+1/4+1 phase design. It was an AM2 socket design contstraint and the board is only able to have a true 4+1 phase design. That didn't stop manufacturers from doubling up though.
As for my board's 6+2 design and BIOSTAR's 6+2 design I'm not exactly 100% sure on how they achieved that.
some PWMS chokes and caps count does not equal phase ;)Quote:
Originally Posted by BadNizze
thats not 6 phase...........Quote:
Originally Posted by BeepBeep2
*scratches chin*Quote:
Originally Posted by chew*
The Biostar FX board is 4+2. Although the stock cooling solution is possibly worse than what I had modded onto my TA790GXE 128M 4+1 board the FX power supply is still much stronger in practice. The 4+1 board I have can handle quads fine but not a X6 at high voltage. The TA890GXE is 4+1 too but judging from other users here it is definitely improved over the previous generation of 4+1 boards Biostar had.
I think you are all reading way to far into this. Everyone's been on the phase kick since the MSI with 4+1 kept blowing up. The key is to keep the PWM's cool. I've pushed my GD70 pretty hard but I've always had active cooling over the NB/PWM area and I've not had any issues. I plan on pushing it harder when I get around to picking up a Thuban before replacing it with a 890FX board. There was an article, I believe on bit-tech, a while back regarding "Phase" design. 4+1, 4+4+1 etc.
Less is more can apply here as long as the quality of components is high, and to those worrying about your boards being 4+4+2/1 whatever and not true 8+2 dont worry and just enjoy your board and the overclock that comes with it. :D If this thread was never made a majority of you would of never known the difference and/or care.
6-core?Quote:
Originally Posted by TheBlueChanell
All I was saying in the other thread is that MSI should NOT need a fan over the NB/PWM area. They design those heatsinks for a reason. It doesn't say in the manual to buy a fan separately and stick it over them. It's supposed to stay cool. If ASRock, ASUS, Gigabyte, ECS, DFI can do it then why can't MSI?
If my memory serve's me well DFI had issue's with pwm's blowing up on the M2R boards. The one's that were stable, were as rock solid as you can get.Quote:
Originally Posted by BeepBeep2
On the MSI if you run the CPU stock, or push light voltage I don't think you'd need a fan but if you're pushing heavy clocks and volts you should probably throw some cooling on there just like any other component that you're overvolting and clocking. Especially on air. It just seems like good practice to me but idk :/ ymmv.
Edit: Forget to tell you what I was running. It's a 965BE 140w, if you read my earlier post more carefully you'll see I mention moving to a Thuban. I'm been doing some other stuff so it's not high on my priority list atm.
i beat the hell out my 790fx-gd70 & 965be - over 1.54v 24/7 & constantly over 1.6v benching, never w/ active cooling on pwm's - and stable as a rock. they were always hot as hell too because they were hiddin out of the case airflow behind my 120mm rad. the gd70 was prolly the best board ive owned regardless if it has 0+1 phases
Anyone care to work out the wattage on an FX-55 at 2v/3.92GHz max (albeit idle) and 1.68v/3.45GHz 100% load running F@H 24/7? I get 183w, which was stable for MONTHS without the proper cooling on the PWMs - and that was only four phase. It really isn't the NUMBER of phases but the quality. Now take George's example of a P4 3.4GHz EE Gallatin core at 4600MHz and 2.23v and I get 288w, again done on 4 phase back then.
What's the TDP on an X4 965BE C2 at 4GHz 1.54v? And an X6 1090T at the same speed? I don't understand why the number of cores affects anything if the TDP is similar. Please someone enlighten me :(