DDR II 667 vs DDR 400
We presently have DDR II 667 RAM on the committed web server. We are aiming to a new web server. Among the alternatives just features DDR 400 (or DDR 400 signed up). Exists a large distinction in between DDRII 667 and also DDR 400? This is for an AMD Opteron 170 or Opteron 248.
Additionally, if I run CPUZ on the existing web server it reports the sort of memory to be DDR (not DDRII) with a DRAM regularity of 200MHz, CAS Latency 3 clocks, RAS to CAS hold-up 4 clocks, RAS precharge 4 clocks, cycle time 8 clocks, financial institutions cycle time 12 clocks, command price 1T, DRAM Idle Timer 16 clocks. Does this suit the DDRII 667 that we are intended to have?
What sort of web server is this? Appears horribly slow-moving. DDR (1) is extra pricey than DDR (2) nowadays if its a new web server you need to consider the mainanace prices yet wow I assume I throw out even worse computer is than that without looking two times.
667 and also 400 show the bus rate of the RAM ; greater is much better.
After that there is additionally the concern of DDR vs. DDR2 ; DDR2 is much better.
When it involves latency, the first number (CAS latency) is the more vital of the 4 numbers ; lower is much better.
See inquiry # 4 of the web page for CPU-Z to see why it could misreport what RAM you have actually mounted. If you eyeball your RAM, the majority of RAM marketed in recent times has a sticker label on it that claims specifically what speed it is.
You claimed that CPU - Z reported your memory as:
- DRAM regularity of 200MHz
- CAS Latency 3 clocks
- RAS to CAS hold-up 4 clocks
- RAS precharge 4 clocks
- cycle time 8 clocks
- financial institutions cycle time 12 clocks
- command price 1T
- DRAM Idle Timer 16 clocks
Of these numbers, both with the largest solitary influence on memory accessibility rate are the first 2 over, the front side bus rate (200 MHz x 2 for DDR = 400 MHz) and also CAS latency. Nonetheless, you asked does this suggest you do not have DDR - II 667 - - this relies on whether your CPU sustains a front side bus price of 667.
In a comment, you claimed that this is a server you can not power off or reboot to do this check. So in CPU - Z, consider the SPD tab. SPD (Serial Presence Detect) is a means to read details concerning the memory from the memory. This need to inform you the supplier, version, component number, max transmission capacity, permitted timings for various bus regularities, and more. You can consider each memory port and also inform what sort of memory remains in each placement.
In CPU - Z in the "Memory" tab, it simply informs you just how the BIOS and also OS determined to set up memory timings, based upon considering every one of the memory chips and also based upon BIOS arrangement. The "SPD" tab informs you specifically what the memory sticks you have can.