Bart1987

I'm thinking of upgrading my 2x512MB kingston HyperX pc2700 memory for a 2x1GB kit
But I don't know if I should be getting a PC3200kit with cas2 latency or a pc4000kit with cas3 latency.

And which I should pick. These are the kits I can chose from (decent prices ):

PC3200:
Corsair TWINX2048-3200C2(PT) ~ €190
OCZ PC3200 PLATINUM XTC DUAL CHANNEL ~ €200
OCZ PC3200 EL GOLD EXTREME XTC DUAL CHANNEL ~ €200
G.Skill PC3200 F1-3200PHU2-2GBZX ~ €215
Kingston HyperX Ultra Low-Latency Dual Channel ~ €230
Mushkin DDR 2048 MB, HP3200, 2-3-2 Dual Pack €220

PC4000:
OCZ 2X 1GB PC4000 PLATINUM XTC DUAL CHANNEL ~ €220
OCZ 2X 1GB PC4000 EB PLATINUM DUAL CHANNEL ~ €235
OCZ 2X 1GB PC4000 EL GOLD DUAL CHANNEL ~ €205
OCZ 2X 1GB PC4000 EL GOLD EXTREME XTC DUAL CHANNEL ~ €205
Corsair TWINX2048-4000(PT) ~ €205
G.Skill, F1-4000USU2-2GBHZ ~ €210
Mushkin DDR 2048 MB. XP4000. ~ €235

Any of these you would recommend or ones you wouldn't recommend at all.
Should I go for PC3200 of PC4000. Any advice would help a lot.

CDsDontBurn

it's hard to say. those are all good choices. though, of all the ones i saw, i would go w/the OCZ Platinum XTC. while doing my research on the memory modules you selected, those seemed to give the best performance IMO.

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Bart1987

the PC4000 or PC3200?
the OCZ 2X 1GB PC4000 EB PLATINUM DUAL CHANNEL has better latencies than the PC4000 platinum XTC version.
I'm leaning more toward the PC3200 sticks because those can run 2,3,3,6 or even 2,3,2,5 at pc3200 and most of those pc4000 wont do that. But I don't know how well those pc3200 will run at anything higher than 400Mhz.

CDsDontBurn

i was talking about the 3200 sticks. those are guaranteed to run at DDR400 with those low latency timings. the 4000 sticks.....well, you know they can run at 4000 specs . as for OCing, having low latency DDR400 sticks will be good OCing sticks. for example, my corsair is rated at DDR400 (pc3200), but can easily do DDR500 (pc4000). why? because they are low latency sticks.

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H3X4D3C1M4L

My RAM in another system did DDR520 or so, 2.85 volts at 3-3-3-8...which is decent. They do 2-2-2-6 PC3200 at 2.7 volts.

OCZ Platinum sticks always rule... even if you fry them from overclocking, as long as you don't go over a certain voltage its warrantied

CDsDontBurn

what i like about my corsair sticks, is that they run at 400 2-2-2-5 @ 2.6v and DDR500 2.5-3-3-7 @ 2.8v with 1:1 ratio. i know my RAM can go more, but it's being bottlenecked by my CPU

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Bart1987

to bad the corsair 1gig dimms work at 2.75V at 2-3-3-6 by default.
I think I'm going to get the OCZ platinum.

H3X4D3C1M4L

Enjoy

soloz2

get DDR400 w/ tight timings if you're going to OC and DDR500 if you want to OC for some more bandwith.


and cds... that's cause you've got TCCD. My OCZ Platinum rev. 2 TCCD run DDR400 2-2-2-5, DDR500 2.5-3-3-7, DDR600 2.5-4-4-8, DDR640 2.5-4-4-8

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CDsDontBurn

how can you run your memory so fast? do you run it at 1:1 ratio? i would like to do 1:1 ratio all the way, but i'm limited by my CPU at 4Ghz (DDR500 specs) once i get there.

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H3X4D3C1M4L

I've never heard of TCCD's doing DDR620... that's f**king insane

>GSXR<mrbusa

i really wish i had an amd system everytime i hear someone talking bragging about there ram oc.

your getting some good advice already so there really isnt much to add except whatever ram you deside to go with do a compatability search on your mobo site and ram site and some other forums to make sure everything is stable between the brandnames.
i am running this stuff OCZ 2X 1GB PC4000 EL GOLD EXTREME XTC DUAL CHANNEL,and rma'ed the first set because i thought the ram wouldnt do the rated oc.it turned out that my 2.8c would not run as fast with this ram 1:1 as it would with my old hyperx.so when i got my 3.4e and lowered the multiplier it worked and now im back to being cpu limited.definetly going high end AMD on my next build this fall when all the new gooddies are coming out.good luck

psychlone

I've done my share of research on RAM, and settled on Corsair XMS PC3200 C2 2048MB TwinX sticks.
I know that the lower latencies give me alot more headroom to overclock them, and I get better bandwidth with personalized tweaked latency settings.
Right now, I'm running 2.5,3,2,5, TRRD 2T, TRC 7T, TRWT 2, TREF 7.8us Read Preamble 5.0ns and ASYC Latency at 7.0us, at 1T, 5/6 divider, and it's pushing out 475MHz DDR!!!
I can get over 7100 points in Everest Ultimate Edition on the read AND write benchmark, which is well above (600+ points) where the stock latencies rest.
I believe that lower latency RAM is the way to go for now...until they're able to get better efficiency ratings out of DDR2.

Psychlone

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CDsDontBurn

is it possible to hit CL 1.5 on some of the newer MoBos? I've heard of one, but i've forgotten who it is that makes it. now, to add to that; would it be more beneficial to have the tighter timings, or to run at a slight OC on the rig?

lol.....and i'm asking that. i have my own ideas, but i just want some of your guys' input on that. and obviously having both an OC and tight timings would be most ideal, but i'm saying this assuming on running on OC only, or tight timings only.

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Bart1987

I think it depends on how much you would gain in bandwidth compared to higher latencies. If it's only 20-30MHz and you have to go from 2,2,2,5 to 3,3,3,6 or something like that I don't think it would be worth it. I think the difference would be minimal, but it's probably different for every type of cpu. Athlons64 do better with tighter timings than Pentium4.

H3X4D3C1M4L

CL1.5 is pretty impossible except at sub PC2700 speeds

CDsDontBurn

this review on tom's hardware says otherwise . GeIL AFAIK is the only company that supports it.....but the article is almost a year old.

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H3X4D3C1M4L

Yeah but look at the voltage: 2.9V at stock speeds just for that timing.... again, if you ran it at low speeds and the stock voltage you might do it... but most mobo's even though they support it, won't run it well

Ain't worth it when 2-2-2-6 @ DDR433 or PC3500 works just fine and gives more bandwidth.

CDsDontBurn

that's true. no argument about that.....

what is the highest OC you can achieve when running at 2-2-2-6 timings (regarless of voltage)?

using the 2-2-2-5 timings, i've been able to take my system to DDR440/3.5Ghz stable running 2.8v into the ram, stock voltage on CPU. DDR450/3.6Ghz is where i have to start loosening up the timings a little bit to maintain system stability

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H3X4D3C1M4L

Well the reason I run 2-2-2-6 is cause of my mobo... I can't personally get my mobo to go too far because I'm on an Athlon XP, by best on this machine is PC3500 (433) at 2-2-2-6, 2.8 volts (2.75 in BIOS but for some reason after 2.7V it goes .05 up by itself anyway...). At 2.85 volts and 2-2-2-6 in my friend's A64 board I hit DDR448, which is as good as it gets. However loosening to 3-4-4-7 gets me DDR500

Bart1987

I should be getting the memory this week *finally*
It takes some time when the company doesn't have them in stock and has to order them in the US

BWX

Did you get it?

I am needing to buy a 2x 1 GB kit.. Not sure what to get..
I want to run it at 250mhz whatever I get.. my mobo running 250mhz FSB right now with 3 sticks (1x 512 and 2x256- T2 -won't run T1, 400mhz, 250mhz fsb) divisor 4:5 or whatever.. I want to run 1:1 with new sticks, and T1.. 250mhz and higher hopefully.


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I dunno.

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Bart1987

I'm not much of an overclocker, but I wasn't able to get the memory stable at 235MHz, memtest wasn't a problem, but when I ran prime95 it stopped after 1minute with errors eventhough I tested the cpu before and it was stable so now I've got it running at 230 3-4-4-8, so if you really want to run 250MHz and never want to run 200MHz I would recommend getting a DDR500/PC4000 set

BWX

That's cool, I wonder if it is the memory that won't run that fast or the settings in the bios that is limiting the OC? Hard to say. I probably will get a set of PC4000 or higher sticks though, just because I really want to run them that fast.

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Alien1

Whatever DDR Ram (not DDR2) you buy from these the difference in performance between them is minimal in the real Gaming world

That's why AMD never official supported DDR1 Ram which is more than 3200

But if your hobby is overclocking (not mine) i understand why you want to buy Ram with better Latency,Cas, and timing

BWX

For me it will be a big step up because of my strange mem configuration, and the fact I cannot run in T1 mode or dual channel mode because have 3 sticks. Even though the memory I have is very good, and very expensive, it is just the wrong config. So a 2GB dual stick set will help me a lot, my mem is my current bottleneck. Even so, my system as it is, is pretty fast.

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Zelig

Actually, I'm pretty sure CL1.5 is impossible at any speeds. You can set your motherboard to report CL1.5, but Athlon64 memory controllers don't support it if you check the whitepapers, and performance is identical to CL2.

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