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  #1 (permalink)  
Old 11th December, 2002, 05:56 PM
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Testing of 8rda+-some conclusions-ET plse read

Using Xp2700/Promeia/Corsair XMS3500.

Cannot get this setup beyond 195fsb stable 195x13 2.55Ghz (default muliti) no matter what timeings are used- i can get the system to boot at close to 2.8 ghz using ram at 50%.

Can boot system with 240+FSB with memory at 50% for example.

the CPU unlock only works for multis below 13-even 13 wont work(latest beta bios)-maybe manual unlock only way to get higher multis-system goes thru reset and defaults to 100mhz.

It appear Corsair only test thier memory on Asus/via platform at this time(see thier forums) so thier claim of 217FSB really only for that platform-the NF2 as we know clock for clock is faster and is feature rich hence requires more power-the lower latency or power requirements of NF2 chipset i think are the cause of the problems we see.

I notice that the 5V rails look worryingly low (4.8 and 4.89 volts).

I have managed to source a psu rated at 3amp 5vsb(the highest rating i could find) and will continue testing..

Regards to all
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Old 11th December, 2002, 06:13 PM
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I dunno, take a look at what caper is up to.
He seems to be the only one getting to high FSB on our board at the moment running sync.

My memory has never been much cop over 200.

Some people can, others cant there must be some reason why....
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Old 11th December, 2002, 06:17 PM
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As for Corsair testing on VIA/ASUS (or Epox its all similar)
it means we cant compare like for like.... or expect to get 217 sync

Can you run your memory at a higher speed if you run async (say 120% ?
I suspect you will be able to.

Running sync will be inherantly more agressive as its much more efficent.
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Old 11th December, 2002, 06:29 PM
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Quote:
Originally posted by Holst
As for Corsair testing on VIA/ASUS (or Epox its all similar)
it means we cant compare like for like.... or expect to get 217 sync

Can you run your memory at a higher speed if you run async (say 120% ?
I suspect you will be able to.

Running sync will be inherantly more agressive as its much more efficent.
Why do you suspect that?Has it to do with the heated
north brigde to do?
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Old 11th December, 2002, 06:41 PM
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fsb is no problem with this board.
i have two sticks of twinmos pc3200 256mb with twinmos chips(not winbond) and have no problems to reach 210fsb+ sync with 2422 timings!!!(200fsb sync with 2422 timngs @ 2,63volt)

the only problem is the performance drop if multiplier under 10 are used!!!

holst could you give this information to epox headquarter??
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Old 11th December, 2002, 06:47 PM
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Quote:
Originally posted by baller02
fsb is no problem with this board.
i have two sticks of twinmos pc3200 256mb with twinmos chips(not winbond) and have no problems to reach 210fsb+ sync with 2422 timings!!!(200fsb sync with 2422 timngs @ 2,63volt)

the only problem is the performance drop if multiplier under 10 are used!!!

holst could you give this information to epox headquarter??
Great that you have twinmos,i have one stick with Pc 3200 512Mb with twinmos chips and wonderd how high it will go.
Havent got my board yet but it will be here later this week.
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Old 11th December, 2002, 06:58 PM
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Quote:
Originally posted by baller02
fsb is no problem with this board.
i have two sticks of twinmos pc3200 256mb with twinmos chips(not winbond) and have no problems to reach 210fsb+ sync with 2422 timings!!!(200fsb sync with 2422 timngs @ 2,63volt)

the only problem is the performance drop if multiplier under 10 are used!!!

holst could you give this information to epox headquarter??
How do you mean performance drop with less than 10x multi ?

Are you increasing the FSB to keep CPU speed the same ?

How are you measuring performance and how much of a drop is there.

(holst reserves the result to laugh at you if you only used sandra :P )

Quote:
Why do you suspect that?Has it to do with the heated
north brigde to do?
There is inherant ineficency running async, this gives everything Chipset, memory, CPU an easyer time.

Im not sure what to make of these people claiming hot NB, all the boards ive used even when overclocked using stock heatsink have run very cool on the NB, having said that cooling your NB wont hurt your overclock.
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Old 11th December, 2002, 07:11 PM
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200 fsb for everyday work and 207 max with corsair pc3200 @ 2-2-5-2.
I remember many reviews claiming that corsair's pc3200 is able to do only 193-196 with timing maxed out... so I can say that Nforce2 rulez with that brand
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Old 11th December, 2002, 07:14 PM
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@ holst

in this thread Epox 8RDA+:changing multiplier affects performace a lot i described the problem with details!!

the performance drop in real world applications is the same as in sandra mem bench.
how i said i have no problem to reach high fsb(210fsb+ sync with 2422 timings and 240fsb with async), i use thermal paste and a fan for my northbridge.
the perfomance drop with multiplier under 10 happens with all fsb's with running mem sync.
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Old 11th December, 2002, 07:33 PM
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the problem is, i have an xp1800+ tbred and it runs fine @10x200fsb but if shutdown and start my computer again it doesn't start an beeps.
so i must use multiplier under 10 to run 200fsb+.
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Old 11th December, 2002, 07:36 PM
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Quote:
Originally posted by baller02
the problem is, i have an xp1800+ tbred and it runs fine @10x200fsb but if shutdown and start my computer again it doesn't start an beeps.
so i must use multiplier under 10 to run 200fsb+.
Is it Prime stabel at 2000 Mhz if not that could be your problem.
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Old 11th December, 2002, 07:42 PM
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it is prime satble can run this for hours but when i cold start there is no go
i need 1,9volt fpr 2000mhz, maybe at startup this board use default voltage?

9.5x200 @ 1,675 vcore is no problem, cold start is also no prob with this setting!!

the perfomance drop with mutliplier under 10 is also @ 166fsb or any other fsb!!!!

this was only for why it is important for me to have full performance with mutliplier under 10!!


all three bios versions i tested have this two problems
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Old 11th December, 2002, 09:26 PM
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Quote:
Originally posted by Holst
I dunno, take a look at what caper is up to.
He seems to be the only one getting to high FSB on our board at the moment running sync.
Sorry...I am not able to run high fsb sync.
You must messed up me with muzz.
I think he is able to do it.

I will try some other mem soon though, and RMA my XMS.
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Old 11th December, 2002, 10:02 PM
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not that 200 is that high for this board but i am running 200 sync at all stock voltages and 4 2 2 2. i havent started pushing it though, i just put it together this morning
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Old 11th December, 2002, 10:32 PM
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I'm able to get FSB215 synchron 4-2-2-2.0 (Prime 24h-loop), but I can't push my CPU at the same time. My AXP2400 will go by these settings maximum to ~ 2000MHz, with lower FSB it will go to ~ 2300MHz.

Well I think, the major setting for high FSB is CPU Interface = Optimal, with Aggressive anything higher then FSB196 is a no go!!!
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Old 11th December, 2002, 11:08 PM
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I am able to run 211 fsb sync 2.0-2-2-4 CPU interface agressive.
Maybe more, havenĀ“t tried with the new BETA.
Will do though.
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