<<<>>>My 12 T-bred results<<<>>> *5/9/03*

[Shimmishim]

UPDATED 5/9/03

Here are my results. These are all Tbred B's ranging from weeks 0251 to 0310

The setup for Tbreds #1 - #6:
EPoX EP-8RDA+
2 X 256 PC2700 SAMSUNG ORIGINAL
Thermalright SLK-800
TT Smart (dumb) Fan 2
Antec Truepower 430W
Arctic Silver 3
WINDOWS XP SP1

Tbreds #7 through current:
ABIT NF7-S v 2.0
1 x 512 PC3200 GENERIC PCB w/ WINBOND BH-5
Swiftech MCW-5000A WB
ViaAqua 1300 Pump
Dtekcustom radiator
120mm fan
Tygon tubing


I've tested 12 tbred b's

1. 0251 1700+ JIUCB
2. 0301 2100+ AIUHB
3. 0302 1700+ JIUHB
4. 0302 2100+ AIUHB
5. 0304 2100+ AIUHB
6. 0302 1700+ JIUHB
7. 0307v 1700+ JIUHB
8. 0310u 1700+ JIUHB "28" "2102"
9. 0310w 1700+ JIUHB
10. 0310w 1700+ JIUHB "26" "0303"
11. 0310w 1700+ JIUHB "27" "1384"
12. 0310x 1700+ JIUHB "26" "0360"

"2X" "XXXX" <--- Downgrade from and batch #






O/C results:


1. 1950 @ 1.875V = 33.3% overclock (487 mhz) ( 11.5 x 169 ) @ 2.5-3-3-7
2. 2125 @ 1.775V = 22.9% overclock (396 mhz) ( 12.5 x 170 ) @ 2.5-3-3-7
3. 2170 @ 1.775V = 48.3% overclock (707 mhz) ( 12.5 x 173 ) @ 2.5-3-3-7
4. 2340 @ 1.775V = 35.3% overclock (611 mhz) ( 13.0 x 180 ) @ 2.5-3-3-6
5. **2300 @ 1.775V** = 33.0% overclock (571 mhz) ( 12.5 x 184 ) @ 2.5-3-3-6
6. 2300 @ 1.850V = 57.2% overclock (871 mhz) ( 12.5 x 184 ) @ 2-2-2-6 *I switched over to some pc3000 hyperX*
7. 2208 @ 1.725V = 50.1% overclock (741 mhz) ( 12.0 x 184 ) @ 2-2-2-6
8. 2500 @ 1.950V = 70.9% overclock (1037 mhz) ( 12.5 x 200 ) @ 2-2-2-6 *** Switched to pc3200 winbond bh-5
9. 2400 @ 1.875V = 64.0% overclock (937 mhz) ( 12.0 x 200 ) @ 2-2-2-6
10. 2400 @ 1.850V = 64.0% overclock (937 mhz) ( 12.0 x 200 ) @ 2-2-2-6
11. 2400 @ 1.800V = 64.0% overclock (937 mhz) ( 12.0 x 200) @ 2-3-3-6
12. 2400 @ 1.775V = 64.0% overclock (937 mhz) ( 12.0 x 200) @ 2-3-3-6



** The stability of this chip was never determined because it always ran too hot for me. ChampionATturf owns this cpu now and I hope that he will post results for this chip when he receives it. **

All other chips were determined to be stable by running at least 6+ hours of prime95. I can't remember temps so don't ask.



Edited: Now includes mult x fsb and ram timing
Edit #2: 2 more tbreds added
Edit #3: 4 more tbreds added

 

[THUGSROOK]

6? :Q
and you guys think im bad?

NJ

 

[Shimmishim]

hey, but on average, these things cost about 55 for a 1700+ and 95 for a 2100+

as compared to .... 155 for each of those 2.4B's!!!



good luck with your new project whatever it may be...

 

[THUGSROOK]

hehe ~ good point

if the intels were that cheap id be buyin 5 at a time too
but as it is ill have to settle for 1 at a time.

yea im kinda tight lipped about what im doing these days

 

[Shimmishim]

uh oh... can't wait!!!

seeing your posts wants me to build a new p4 system... but i don't think i can afford to upgrade stuff at this point...

i don't mind testing out cpu's that cost $55 bucks... then selling them....

but i've been sort of tempted to buy a barton 2500+ .... but not sure if it's worth the $180 price tag at the moment.... ALSO because it's a brand new chip... it's gonna take a bit of time for it to mature...

 

[Soulkeeper]

sweet good job there

 

[mechBgon]

Duuuude, this is you ---> Thanks for the report!

 

[sygyzy]

Can you post what FSB and multiplier you used for each?

 

[bgeh]

looks like i'll be getting the 2100+(i want to oc it to 2700+, or 2.167GHz)
i'm trying to go under 1.7v or if possible, 1.65v
thanks anyway for the info

 

[Shimmishim]

Originally posted by: sygyzy
Can you post what FSB and multiplier you used for each?

done.

 

[sygyzy]

I'd like to know how you determined when to start dropping multipliers and when to stop increasing FSB. I mean why not doing the 1000's of other combos that should technically work? How about a 15 x 147? etc. I don't mean to actually try that, but I want to know your method of reaching those combinations of mult. and fsb.

 

[Shimmishim]

Considering that I was using pc2700 RAM, I always started off by doing default mult x 166 mhz ( i put memory in sync with FSB)... once this worked, i upped the mult and lowered the fsb as much as i possibly could while remaining stable. once i was able to find a sweet spot, i lowered the mult and upped the fsb to match that speed.

In example:

the last 1700+, i started at default x 166 = 1826 - computer booted, posted, ran prime for 5 minutes. good to go.

at this point, upped fsb (attempted 2000) 11 x 182 = 2002 , no problems ( in order to make sure i could reach this speed, i now upped the vcore from default to 1.65V)... ran prime95 for 5 minutes. good to go.

tried for 2100 because i didn't want to o/c the ram to badly, i upped the multiplier. 11.5 x 183 = 2104.5 @ 1.675V ... ran prime again for 5 minutes... no problem

tried 2200 ... 12 x 183 = 2196 @ 1.725V ran prime95 ... no problem

tried 2300... 12.5 x 184 = 2300 @ 1.75V ran prime95... sumout error pretty fast... upped vcore to 1.775V ... sumout error in 1 hour... 1.8V... sumout error in 2 hours.... 1.85V no error for over 7 hours ( i went to bed)... determined this to be the sweet spot...

because i am using kingston hyperX pc3000 and i want to run it in spec somewhat, i'm going to keep it at 184 (rated for 185) ... i tried 200 but no matter how much i relax the timing or up the vdimm, memtest86 would always lock up around 5 minutes using (c-2-3-1-2-0 spacebar)...

i have purchased some winbond pc3200 ram and will run at 11.5 x 200

so basically:

make sure you are being limited by the processor is the key, and not the ram.

also make sure you relax the timing of your ram as much as possible... (try using 3-3-3-8 when you first start overclocking).... once you find the sweet spot, use more aggressive timing...

 

[sygyzy]

I read what you wrote but it seems to me like you don't really have a method down. At first you are upping FSB then randomly you decide to switch over to upping the multiplier. For example. to go from 2200 to 2300, you raised the mult 0.5. Why not up the FSB. You don't want to run memory out of spec right? Well in that case, since I have PC3200, I should keep it at 200 FSB and keep upping the mult? There's no way that'd work, that's a 2.6 ghz. I wish there is a better way. I know every OC is different but there has to be some sort of more concrete methodology. Or maybe, I am just misunderstanding you.

 

[Shimmishim]

sorry about confusion...

when i say in spec i mean at or below what the ram is rated for ... so in my case pc3000 .... less than or equal to 185 mhz

it just happesn also that 11, 11.5, 12, 12.5 all give approximately to the closest 100 mhz (i.e. 2100, 2200, 2300... ) when using fsb around 185

my goal was to increase by 100 mhz each time

in yoru case, if you're using pc3200, just run it below what it's rated for. so try 11 x 180 ... then 11.5 x 180 or anything that'll basically show that you're not being limited by your ram...

i guess in my case... running the ram at what it's supposed to be and upping the mult by .5 gave me what i wanted.

i guess it all depends on how much you want to increase your o/c by each time.

 

[sygyzy]

I just randomly decided to reboot and mess with my settings and it seems to be working. I haven't run any tests yet but I have to write a paper so that will be for later.

Memory: 5-2-2-2.
1.80 V
12.5 x 185
38C, little load right now.

Only problem so far is the name string on bootup and in CPUID is AMD XP 2600+, although WCPUID reports the correct speed, fsb, and multiplier.

 

[Shimmishim]

that sounds good!

12.5 x 185 = 2312.5 @ 1.8vcore is good. now run prime and see if it errors out... if it does, then either

1. up your vcore to 1.825 or
2. lower your fsb by 3-5 mhz

 

[sygyzy]

I ran a Prime benchmark for fun and it froze my computer after 1 iteration. This made me so sad so I went to 13 x 175. I will try what you said tomorrow. I have a Tbred B 1700 sitting next to me. Kingstom HyperX PC3000 memory and 8RDA+ comes on Tuesday. What should I start off with?

P.S. Thank you for being so helpful.

 

[Shimmishim]

do what i did... start at 2000 then work your way up to 2100 then 2200 then 2300

refer to my post above and you'll see what happens

you'll know you've hit a wall when you run prime and it'll just crash so fast it'll make your head spin

also, don't push voltage higher than 1.85V unless you are running water...

 

[Blooz1]

Great job Shimmi! I've been following everyone's results here over the past few months, and it's nice to see all your experiments condensed into one page!

I have a couple of friends who see no "advantage" to overclocking.....I've printed this thread out for their reading pleasure!

let us know your results with the Twinmos vs. the HyperX.....I'm planning on getting some of the Twinmos myself!

 

[anomaly]

Why are you unwilling to run the ram harder? From what I understand the Samsung should hit 200mhz fsb +-5mhz @ 2-2-2-6. Would you atleast test to see if it does for you? Every review I have seen using the TCB3 chips has done that.

 

[XBoxLPU]

Originally posted by: anomaly
Why are you unwilling to run the ram harder? From what I understand the Samsung should hit 200mhz fsb +-5mhz @ 2-2-2-6. Would you atleast test to see if it does for you? Every review I have seen using the TCB3 chips has done that.

Yes please and does the Hyper X run at 200 with the same settings ?

 

[Shimmishim]

Originally posted by: anomaly
Why are you unwilling to run the ram harder? From what I understand the Samsung should hit 200mhz fsb +-5mhz @ 2-2-2-6. Would you atleast test to see if it does for you? Every review I have seen using the TCB3 chips has done that.

1. The sammy ram have been sold off!

I tried running at 200 mhz using 2.5-3-3-7 and for some reason the computer screen would flash once in a while while i scrolled really fast with the mouse. Because I was using two sticks, i couldn't think of a solution to fix this. i figured i had hit a wall on the ram.

2. I tried running the hyperX pc3000 at 200 mhz using 2-2-2-6 even 2.5-3-3-7 and even 3-3-3-8 and none seem to work. I did notice something interesting though with the 8RDA+. When the kingston was placed in dimm slot 1 running at 200 mhz, i had the same screen flash issue.... this was solved by moving it over to dimm slot 3. i thought everything was fine. i tried running warcraft 3 and the game froze on me. no matter what i tried, the game kept freezing. so i ran memtest86 to check it's stability. i didn't get any errors but when it got to test #6 @ 12% it would always freeze. so i determined that i just didn't get a good stick of hyperX that most people are getting.

Hope that answers your questions!

Edit: I can try to run the ram again at 200 mhz. I will try this later today or tonight. I have to study for an exam so if i get a chance, i'll try. I think another problem might be with the vdd voltage. I hear that the 8rda+ is only capable of a vdd of 1.5V... people are modding the board in order to get upwards to 1.7 to 1.9V... and this has helped a lot in getting over the 200 mhz mark.... i really don't want to mod my board because i really don't know too much about soldering and what not. if worst comes to worst, i will mod my board

 

[Shimmishim]

Okay...

running 12 x 192 (2-2-2-6) = 2304

I'll try playing warcraft 3 later this afternoon to see if this thing freezes up....

i'm not going to run prime95 again just becauseit's running at the same speed...

it passed the infamous 5 minute mark on memtest86 and the 15 minute mark where memtest has been freezing on me...

 

[sygyzy]

Hmm same settings as before, bumpe voltage up to 1.85.. Temps increased about 5C but it is stable so far. 12.5 x 185.

 

[touchmyichi]

I can get a 2100+ t bred b for 90 and a 1700+ t bred b for 55, thats only a 35 dollar difference. Is it worth it? I think it would be worth to upgrade from my 2000+.