Hi-Perf @ Low $$ -> 2GB DDR500 Patriot PDC2G4000ELK (Samsung UCCC) OCing Report!!!

[irev210]

bachus, ive spent a lot of time trying to squeeze 5 more mhz out of the memory, and it just isnt having it. I will go ahead and do my screen shots now that i know this is pretty much the limit.

I was able to do a 1m pi at 290 8-3-4-3-1T just once... but that was luck lol.

in about 35 minutes, ill have my 32m pi up

[-47-!]

;[ 200 on newegg now no MIR I wanted these suckas

[farksy]

Hey bachus, what week is your samsung UCCC? Upon further inspection of my dimms, the heatspreaders suck. The Thermal tape maybe makes 20-30% contact with IC, some of them, the IC doesnt even touch the thermal tape... like a mini oven.

I carefully took off the heatspreaders and put them aside incase I need to RMA.

My samsung memory is week 552. I wonder if newer UCCC is better. Any thoughts?

Really wish I could get some higher speeds out of these.

Well i always thought that heatspreaders just hindered the overclockabiliy of your rams, as the contact and heat transfer isn't very efficient, even if lab tests from the ram manufacturers have proven otherwise.

Personally i can't take mine out as it's under warranty. [Parent's $$, so better not fool around with it.]

[bestmancajun]

Heat up the ramsinks with a heat gun and give it a squeeze.

[eva2000]

excellent work bachus... knowing how much longer it takes to test 2GB kits over 1GB kits, i appreciate your hard work

[irev210]

Okay, finally got off my lazy behind

here are go:

[FLMJIGGY]

Very nice indeed!!! Great write up and the updates too!!!

Now I'm in a which DDR 500 dilema?!?!?!
Mushkin
G.Skill - Personally used and its great! Had 270 @ 343
Patriot- tempted with the rebate
OCZ

[macaddict]

I just went with the G.Skill HZ but if it doesn't work out I'll sell them and go with these Patriot's. They look really nice indeed.

[tommo123]

i've been trying to find RAM that can run in the yellow slots in my DFI NF4 mobo. crucial ballistix/G.skill etc. no joy. tried these patriots and they worked sweet. got them to 270mhz @ 2.5-3-3-7 and will leave them at that

love this RAM

[tommo123]

just noticed that OP got these to 2.5-3-3-5. wonder if mine will do too.

p.s, anyone with this RAM tried getting tighter timings than this? i.e 2.5-3-2-5 etc?

[azrael201]

i've been trying to find RAM that can run in the yellow slots in my DFI NF4 mobo. crucial ballistix/G.skill etc. no joy. tried these patriots and they worked sweet. got them to 270mhz @ 2.5-3-3-7 and will leave them at that

love this RAM

Anyone have luck with this RAM...as much as the reviewer?

I know I know someone will point me to Praz's post but just hopeful for the right BIOS and settings. Interesting yellow slots are also good for this ram?

Suggestions?

I've tried orange and yellow slots and 704BTA and 0406 with the same stable 250MHz. There is not even enough headroom to tighten the timings.

[phi|os]

I just got some last week, and I'm already RMA them because the ed up my windows install. The highest I could get those to boot was 245mhz, lol. I'll let ya know what happens when the next set comes in.

[breakfromyou]

wtf?! if it overclocks that well, why is it just being noticed?

i <3 patriot. right now im playing with my XBLK 1gb kit. right now im screwing around at 290x9, 2.5-3-3-7. its working alright so far haha. now wheres that guide that tells you about the more advanced memory timings...tRRD = !?

nice review. i was telling myself not to upgrade to 2gb until i get a DDR2 system. i think i just forgot about that...how well does the Patriot LLK 2x1gb overclock?

[azrael201]

Well me and another user, Playah believe that the chips were changed. In order to get the advertised 250MHZ you might need to crank up the voltage to 2.9V. Patriot forums said that should be the highest. Playah was only able to hit DDR500 after increasing to 2.9V.

We bought our ram around the same time him from the egg and me from zzfly. However, mine only needs 2.7V to hit 250Mhz. But it only maxes out on 260 using yellow slots.

[phi|os]

I got the RMA'd ram, and it's behaving just like the former. Can someone post up some timings (from the newer batch) cause the timings that bachus has up are just a no go. It just screwed up my windows config file, after booting up FOUR times. Can you believe that?

Just figured out that my board probably just isn't compatible with this RAM. Stupid picky DFI bull.

[azrael201]

try 2.9V and stock 3-4-4-8 timing that is the advertised setting.

maybe if u keep RMA'ing you'll get the UCCC.

[KoHaN69]

My rig: dfi lanparty ultrad nf4, opty 148, ocz powerstream 520w, x1900xtx, PDC2G4000ELK

I got the same sticks phi|os was using.

I changed the timigns to 3-4-4-8, but didnt touch anything else.
I didnt change trc or anything.
it's been over a year since I overclocked memory, im gonna hav eto reread the definitive guide

anyway. What's the stock voltage for 250Mhz 3-4-4-8 2.8v or 2.9v ? is the stock command per clock 1T or 2T ?
Is it better to use this ram in the yellow or orange slots of a Dfi Ultra-D nf4?

I got it to run @ 250, 3-4-4-8, 2.8v all tests ok except Half Life 2 (the ultimate memory stability program :p)



azrael201- your sig says
2x1GB Patriot PDC2G4000ELK (3-4-4-8 1T @ 2.7V 9/10 185Mhz)
DDR? 370MHz? fsb? or ur really doing low the low 185, 65MHz under the stock speed?

[KoHaN69]

Well, this thread seems dead

I RMAed the chip and got a replacement

The new pair do 265 @ 3-4-4-8 1T 2.9v, memtest86 and half-life2 lost coast stable

I know the general rule of yellow slots for UTT/BH & orange for TCCD, but does size of modules matter? what about these? they work seem to both

[phi|os]

Well, this thread seems dead

I RMAed the chip and got a replacement

The new pair do 265 @ 3-4-4-8 1T 2.9v, memtest86 and half-life2 lost coast stable

I know the general rule of yellow slots for UTT/BH & orange for TCCD, but does size of modules matter? what about these? they work seem to both

Nice, good to see they worked out great for ya. I don't know about the ultra's slots, but 265 ain't to shabby. I think the best test for memory is dual spi 32M, and then a few hours of BF2 or BF2142, since EA really knows hows to screw up, if you can survive an EA game, your stick could also probably survive a nuclear blast.

[KoHaN69]

Well, it was only 1 pass in Memtest, and I was playing gothic3 and it crashed, so i brought it down to 260, and i just had gothic3 crash again - must be the game :P
My results aren't nearly as great as Bachus though

I'll test it out throughly later. The reason I did Lost Coast is because (although EA is bad with memory too) valvE's and all source games are EXTREMELY depended on memory stability (even more than BF2)

What's the stock voltage? 2.9 or 2.8 ?

System:
Opteron 148
Dfi Lanparty Ultra D, rev b
2x 1gb PDC2G4000ELK
X1900xtx

Stability testing method: bios's MemTest86 1 pass, Half-Life 2 Lost coast, superpi 32m 1.5 xs

RESULTS SO FAR:

1:1 ratio
265 MHz @ 3-4-4-8 1T 2.8v

1:1 ratio
230 MHz @ 2.5-3-3-6 1T 2.8v

loosening timings to 2.5-4-4-8, or highering the voltage did not improve clocks


Current Testing config:

fsb: 330 MHz
cpu: 330 x9 (2.87 GHz)
ram: 330 * 7/10 ratio (231 MHz) at 2-3-3-6 1T 2.8v

-Why does CPU-Z report the memory to be 228.5


-not too shabby, but i still doubt these are UCCC, if someone could tell me how to safely remove the heatspreaders to check the ram, that would be just super :thumbsup:

[halo112358]

What's the stock voltage? 2.9 or 2.8 ?

UCCC should be in the 2.6-2.8 range, I have some g.skill UCCC that I've played with a bit and voltage over ~2.75 doesn't seem to help much at all.

Current Testing config:

fsb: 330 MHz
cpu: 330 x9 (2.87 GHz)
ram: 330 * 7/10 ratio (231 MHz) at 2-3-3-6 1T 2.8v

-Why does CPU-Z report the memory to be 228.5

-not too shabby, but i still doubt these are UCCC, if someone could tell me how to safely remove the heatspreaders to check the ram, that would be just super :thumbsup:

Is 7/10 ratio a DDR143 divider? If that's the case then your ram divider is 13, so you calculate ram speed like this

FSB * mult = ramFreq / divider

-> ramFreq = ( FSB * mult ) / divider
-> 330 * 9/13 =~ 228

go here

Here's what I'd do for UCCC, loosen the timings to 3.0-4-4-8 @ 2.7v and start them right around 250-255mhz - it should work like a champ. Make sure you read up on how the a64 memory controller handles dividers, it's a simple calculation but not the same as the 7/10 bios setting would lead you to believe. I had that same problem forever, it's much easier to OC on the a64 platform once you understand this.

[KoHaN69]

Thanks, appreciate it. Should I leave all the other timings on AUTO? I couldn't find a definite UCCC guide, and I'm not sure my chips even are UCCC

does running at memory speeds with remainders decrease performance?

thanks for the help halo112358


update: Although 260 1:1 was stable for Memtest86 and superpi, PCMARK2005 bsod-ed

I reread THE DEFINITIVE DFI A64 OVERCLOCKING GUIDE 's memory section (I know the forums are currently down, I grabbed a pdf from one of the members in the chatroom)

So I loosened the memory timings for pretty much everything, and it seems stable now, with PCAMRK 05 score of 4540

[halo112358]

Thanks, appreciate it. Should I leave all the other timings on AUTO? I couldn't find a definite UCCC guide, and I'm not sure my chips even are UCCC

does running at memory speeds with remainders decrease performance?

I'm not sure about the other timings, they depend on the combination of your motherboard & your ram. I use an Abit AN8, it sounds like you use a DFI, so our settings are going to be different even though we both use UCCC.

Running your ram on a divider shouldn't decrease performance if it lets you run your cpu substantially faster You can test by running 1:1 with your fsb set to your highest stable ram speed (260) and benching then use a divider to push the cpu clock higher and bench again.

I bet you can get your UCCC stable at higher speeds, you just need to figure out what all the timings do and pick the right ones for your board & ram.

I just posted this over on the g.skill board - I'm running my UCCC at 2.4v 265/1T 24/7 stable. The biggest thing that helped me was making sure I picked the right Tref for my ram (3120, aka 15.6us). I had to flash a modded bios to set Tref, then things were a lot easier. I think also that UCCC likes weak drive on DFI, I know it likes normal drive on the AN8 - weak drive crashes the machine on boot.

edit:

if you're sure it's UCCC go look at gskill technician's settings for F1-4000USU2-2GBHZ on your DFI board in the g.skill support forum, whatever settings he gives should work.

[azrael201]

Well, this thread seems dead

I RMAed the chip and got a replacement

The new pair do 265 @ 3-4-4-8 1T 2.9v, memtest86 and half-life2 lost coast stable

I know the general rule of yellow slots for UTT/BH & orange for TCCD, but does size of modules matter? what about these? they work seem to both

my sticks work the best in orange...they can boot in yellow but it causes my BF2 to crash after a while despite a 16hr prime stable test. There is no more crashes in BF2 after i switched to orange. it's probably because they are not UCCC's anymore.