Transcend ddr2 6400 ram overclocking

[PsYkiller]

My Config:
MB - Asus P5B Deluxe
Pro - E2180
Ram - Transcend DDR2 6400 @ 300mhz(4,4,4,12)
Ram:FSB - 1:1

Now I would like to know why its said better to keep fsb to ram ratio 1:1. when I increase speed of my ram to 400mhz or maybe 450mhz with poor timings of 5,5,5,15 gives a better score at everest.

I am aware that making the same speed doesn’t bottleneck speed of anything and keeping high ram fsb should not gain performance when system fsb is low.

also in the forum I hear about “P” ram for transcend. can anyone please tell me the difference and how to identify when u don’t have the packet.

anyone having transcend ddr2 6400 ram, please post there overclock with voltage.

thanks

[Infected]

Mine runs at 850Mhz with everything on AUTO in bios and timing of 5-5-5-15

[_pappu]

^^have you tried 4-4-4-12 at 850mhz??

my ram (1gb modules) can run at 960mhz 4-4-4-12 at 2 volts

@psykiller

the ram is put to 1:1 because when you increase the fsb to OC the proccy, the ram speed increases too… say you set it at 800mhz then OC the proccy…the ram speed will go way higher

what you do is OC the proccy to the desired level using the 1:1 ratio…then change the ram multiplier and see what speed suits you best

and about the P (powerchip ICs), check the sticker on the ram modules…there will be an alphabet next to the bar code on the sticker

on that, P stands for powerchip, E for elpida and Q for qimonda

[Evilsizer]

How memory frequency affects latency - Tighter timings vs. Higher speeds? - The Tech Repository Forums

by going over the table in that link… its safe to assume the latency at 300mhz aka DDR2-600 even with cas4 is higher then when your running DDR2-800 at cas5. now even at cas5 for a core 2 to be its more efficent at doing work per clock you need at least DDR2-800. people tend to for get while the FSB is 266 the cpu is actually seeing a buss speed of 1066Mhz QDR(quad data rate) vs SDR (single data rate).

it sure isnt like the good ole days with P3’s and SD-Ram…

[Infected]

and about the P (powerchip ICs), check the sticker on the ram modules…there will be an alphabet next to the bar code on the sticker
on that, P stands for powerchip, E for elpida and Q for qimonda

More on them please I am all ears…

[PsYkiller]

@_pappu_

^^have you tried 4-4-4-12 at 850mhz??
my ram (1gb modules) can run at 960mhz 4-4-4-12 at 2 volts

@psykiller
the ram is put to 1:1 because when you increase the fsb to OC the proccy, the ram speed increases too… say you set it at 800mhz then OC the proccy…the ram speed will go way higher

what you do is OC the proccy to the desired level using the 1:1 ratio…then change the ram multiplier and see what speed suits you best

and about the P (powerchip ICs), check the sticker on the ram modules…there will be an alphabet next to the bar code on the sticker
on that, P stands for powerchip, E for elpida and Q for qimonda

i have two rams currently in my system with P written on right side of the barcode and one spare with M. what does they actually mean.
and how are u getting such a good overclock.
my 850mhz (4,4,4,12) @ 2.00 volt failed.
1000mhz (5,5,5,18) @ 2.00volt failed.
900mhz(5,5,5,15) @ 1.9volt is the best i can get out of my ram.

[PsYkiller]

currently have 2 1gb stick in my system. shall i add one spare 1gb stick in the sytem or its better to keep system as it is. I don’t know how they react to my current dual channel ram setup.

also note the spare one is transcend ddr2 6400 “M” ram.

[_pappu]

^^i dont know that the M means…you can try it out though

and btw, with the p45 chipset on your motherboard, those boards are designed for high performance level and high fsb

check the performance level on your motherboard… use memset

my friend has the same board… i got 960-980 mhz on that one too… so dont know what your problem is (its rotten luck )

[SidhuScorpion]

N = Micron
**M **= ProMos
Y = Nanya
E = Elpida
P = Powerchip

@PsYkiller

also note the spare one is transcend ddr2 6400 “M” ram.

[sharmapu]

so which one is best ???

@SidhuPunjab

N = Micron
**M **= ProMos
Y = Nanya
E = Elpida
P = Powerchip

[stalker]

The P is currently the best from what its available. AFAIK the N’s aka the Microns are not avail in the value series.. and were featured (even that briefly) on the AxeRam series

[user50]

@sharmapu

so which one is best ???

**

The legendary micron d9 chips are the best**

Ahh but on trancend value series the powerchip with brainpower pcb is the best you can get

[vinaycm]

I’ve also got a pair of Transcend DDR2 800MHz modules with the ‘E’ (Elpida) chips.. They were running at 940MHz with 4-4-4-12 2T at 1.92V on my ASUS P5N-E Sli.. (This is not the maximum stable OC i achived, i didnt felt like pushing them any further)..

[Infected]

ok I have the “P” Chips, I can reach 860 @ stock voltage and 5-5-5-15.

Anyone on these doing better? How much can I push this ram?

[vinaycm]

Try pushing a little more.. Try tighter timings with a little more voltage (+.1V should be enough i think) at the same speed (860MHz)..

[_pappu]

give it anything upto 2 volts… dont go above that

then try again

i have 1 P waala and 1 E waala btw, both clock to 960 4-4-4-12

i think you should go the 4-4-4-12 way instead of increasing clocks further

[sam000]

My transcend 1000mhz@1.9v 5-5-5-15 memtest stable for 8hrs(powerchip)
Another 1 gb wont even clock 1mhz @2.0v