I've been running a pair of these (2GB total) in my PC (ASUS P5LD2 motherboard, P4 at 3GHz) for years, but recently I've been having random freezes. Replacing them with another pair of the same did not help. However, the machine did work fine if I put in just the original pair of 512KB sticks (1GB total), which have the same specs.
So, I started playing around with some of the settings in the BIOS, and found that the machine works fine with the 2GB of Kingston RAM if I slow down the memory bus to 400MHz (PC2-3200).
I find it unlikely that both the RAM I've had in there for years, and a newly opened package of the same, would have a problem, so I'm suspecting something wrong with the memory controller instead, that is making it unreliable at full speed, at least in combination with the Kingston RAM (coincidentally, the SATA controller on this board started getting flaky recently too; I replaced it with a PCI SATA card and all is well).
Anyway, I'm wondering if I got get the RAM working again at its full rated speed by upping the voltage slightly, but I'm not an overclocking expert (if I wanted a super fast machine, I wouldn't be running a seven year old P4), and don't know how high I can go without risk of damage.
Any input would be appreciated.
Or maybe it's just time for a new machine (I've had my eye on those Intel Mini-ITX boards).
If your system is stable, I wouldn't change anything else. It's too old to benefit from small increases in ram speed. If you're unhappy with it, start saving for a cpu/board/ram upgrade. I wouldn't get any mini-itx boards, unless you just don't have much space. They tend to run too warm in some of those tiny cases. Go with micro atx which is actually cheaper with some boards.
Thanks. I'm pretty much starting to feel the same way. It works now, so don't fix it.
And I'm also now considering just getting a new regular ATX board with an i3 or i5 and 4GB of RAM on it, and keeping my old case (with new fans), power supply (<1 year old power supply), hard drive (<2 months old), DVD burner, and OS (WinXP SP3 32-bit).
Besides, at least part of the problem _is_ the memory. I have some Kingston DDR2 PC2-4200 533MHz 512K sticks that still work fine with this motherboard. I don't KNOW that the problem is with the motherboard; maybe it just became slightly more sensitive to slightly out-of-spec RAM.
I have seen some mobos (older especially) that support RAM upgrades, ONLY at a lower speed. Some motherboards cannot read spd properly, some cannot set timings within realistic parameters in manual mode. The problem is almost certainly the mobo: is this a prebuilt machine?
It was prebuilt by the local PC guru. The mobo is an ASUS P5LD2. Also, this particular RAM (the two 1G sticks) worked in it for years. It just stopped working (at full speed) recently. Meanwhile, the original two 512MB sticks continue to work.
Yes, the 1GB sticks had been running at the higher speed for at least 2 years, and before they started failing, I hadn't touched the BIOS in ages (and after they started failing and I looked at the BIOS settings, everything was till the way it always had been).
At this point, I'm not going to mess with them any more. They're working fine now at 533MHz with timings of 5-4-4-12, so I'll run with that until I get a new MoBo, CPU, and RAM later this summer. There's no appreciable difference in the benchmarks between running them at 4-4-4-12 and 5-4-4-12, so I suspect there's even less difference in actual applications.
Very strange; there isn't always a tangible answer, I guess. Probably best to just leave them alone, rather than play with them more and either A: waste your time/get a headache or B: Bork something further. Best of luck!