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Hi guys I really noob at the field of computer hardware. I'm too stupid to understand FSB..cloking...memory speed etc but again I don't want to buy something that won't work fine.

So here is a screenshot of my chipset manufacture's website. Here you can see what it supports ( http://goo.gl/EXbev

And here is my pc's current configuration summery screenshot (taken by Hw32 software) http://goo.gl/9oiKr

Now I'm going to buy one more 1GB RAM stick. Could you please advice me about its speed? Like current one?(i guess which is 400MHz, checkout the last screenshot)

btw yea my pc is a crapy one...still running f****g celeron :D

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  • Latest Post Latest Post by caperjack

Dani AI

Generated

Given the Mainboard Model reported (P4M800Pro8237), the system uses desktop DDR2 240‑pin DIMMs. Module naming is often confusing: DDR2 modules marketed as "DDR2‑800" or "PC2‑6400" will sometimes show "400 MHz" in tools because DDR (double data rate) transfers on both clock edges — effective transfer rate is 800 MT/s while the actual clock is 400 MHz. PC2‑6400 denotes the theoretical bandwidth (6400 MB/s).

Practical buying checklist (match these points to the existing stick shown in CPU‑Z SPD): same capacity (1GB), desktop 240‑pin unbuffered non‑ECC DIMM, rated for 800 MT/s (PC2‑6400 / DDR2‑800) if possible, and the same supply voltage (1.8V). Try to match CAS/timings and, if available, the same manufacturer/part number — that reduces incompatibility. Avoid laptop SO‑DIMMs, registered/ECC modules, and very high‑density sticks that some old boards won't handle. If the exact module is unclear, read the SPD tab in CPU‑Z for maker, part number, voltage and timings before buying.

Basic install and troubleshooting steps: power down and unplug, discharge static, seat the DIMM firmly, then test boot. If there is no POST, test each stick alone and try the other slot, clear CMOS and reseat. Mixing speeds will simply run at the slower stick’s rate; mismatched sizes may disable dual‑channel. For stability verification, run MemTest86 (bootable) for several passes. As advised, matching the existing module is the simplest path; the CPU‑Z SPD readout referenced by provides the exact details needed to pick the correct replacement.

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Member Avatar for caperjack

because computers work best with identical sticks of ram when using more than one stick ,the answer here is a easy one ,buy a stick that matches the one you already have installed.
pc2 6400 ddr2-sdram udimm 400mhz
good luck

Edited by caperjack because: n/a
Member Avatar for Member #851298

lol thanks :) btw "pc2 6400 ddr2-sdram udimm 400mhz" whats this? :P when lame shopkeeper will ask like "bus speed?" then I have to reply 400 ryt?

Okay I can handle this...I think there will be a label or something on the RAM stick right?

Member Avatar for caperjack

lol thanks :) btw "pc2 6400 ddr2-sdram udimm 400mhz" whats this? :P when lame shopkeeper will ask like "bus speed?" then I have to reply 400 ryt?

Okay I can handle this...I think there will be a label or something on the RAM stick right?

yes,yes and yes.lol

if you look at the link you provide with the specs of your computer it shows in lower right corner the ram installed in your computer

Member Avatar for Member #851298

Nah I don't wanna see these craps anymore! :D Hardware is such a nightmare to me!

Rather I'm ready to code up the whole algorithm of....what? binary search? or a SOAP api? lol

Anyway marking this post as solved and thanks!

Member Avatar for Member #851298

Hey seems 400 is little rare here! What about 553 or 667?

Edited by Member #851298 because: n/a
Member Avatar for caperjack

Hey seems 400 is little rare here! What about 553 or 667?

actually i think it is 800 when running in ddr mode.
what is the make and model of your computers motherboard ;not just the chipset model from the first post

Member Avatar for Member #851298

what is the make and model of your computers motherboard

Then tell me how to detect it :D CPUz will help?

Member Avatar for caperjack

Then tell me how to detect it :D CPUz will help?

yeah cpuz should show the motherboard make an model

Member Avatar for Member #851298

CPUz shows Mainboard config as below

Model: P4M800Pro8237
Chipset: VIA P4M800 Pro/P4M800 CE/VN800/CN700 rev
Southbridge: VIA VT8237 rev 00

Member Avatar for caperjack

Hey seems 400 is little rare here! What about 553 or 667?

a googled your board it will support 400/533/667/and 800 pc2-6400

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