OK, final update. I put a 1GB stick in the memory slot that is supposedly faulty to make 3GB, working perfectly! I suppose that'll have to do. The saga ends. Please just let this thread die.
On a related note, I can't recommend Intel's x25 SSD enough, getting 20 second boot up time here (30...
Interesting update. I tried swapping RAM between the two memory slots. I seem to have intemittent problems with slot 2, but slot 1 is fine, with either memory module. It's interesting, I tried slot 2 and it took ages to boot up, but once booted, it was responably fast, so I rebooted but it...
It's an ASUS Lamborghini VX2S http://usa.asus.com/products.a...model=1782&modelmenu=2
Mobo is intel PM965 Express Chipset Santa Rosa (the first chipset where intel introduced the flash cache chip), Southbridge is ICH8-M. http://www.intel.com/cd/produc...ng/chipsets/345162.htm
I have a hunch it could be a memory mapping issue with other devices (eg. graphics card) own memory not being correctly mapped outside the 4GB range.
On 32bit OS's you don't get the full 4GB because your graphic card probably has 512MB which needs to get mapped within that 4GB range limit, so...
Many generations old, are you kidding me! I was top of the line only two years ago, granted it's not nthe latest and gratest now, but it still works with a Penryn 45nm CPU which I believe is the latest/faster mobile CPU intel currently make. I'm pretty sure this motherboard is still being sold...
And in case you think it's the memory, I placed each memory module in seperately. Both seem fine, still same excellent performance, it's only when both used together, and with 64bit OS, that I have problems.
OK, I've finally fixed it. Turns out there's some weird compatibility issue with using 4GB RAM on my laptop with a 64bit OS. I've posted about it here http://forums.anandtech.com/me...=2326418&enterthread=y
OK, updated benchmarks:
Seq: Read 258.3 MB/s | Write 73.78 MB/s
512K: Read 201.2...
OK, this is soo bizarre. So I bought an SSD (intel x26 160GB v2) and got a copy of Windows 7 x64. Installed everything and found the overal performance of the OS to be really slow and terrible. I even upgraded my CPU from 2.2GHz Core 2 (T7500) to a Penryn 2.6GHz (T9500), still terrible...
That's more like it!! I just hooked it up to my desktop PC and the scores are:
4K: Read 19.38 MB/s | Write 42.85 MB/s
My desktop specs are Core 2 Duo 3.0GHz (E8400), 4GB DDR3, nvidia 790i Ultra mobo.
I had only just installed Vista 64bit on the desktop and didn't have time to stick SPs...
OK, this is interesting. I tried downclocking my CPU to around 1.6GHz (down from 2.2GHz), and it dropped the random 4K read/write almost by half:
Seq: Read 216.5 MB/s | Write 84.59 MB/s
512K: Read 162.7 MB/s | Write 82.97 MB/s
4K: Read 7.174 MB/s | Write 7.405 MB/s
I'm convinced that...
OK, I downloaded Intel Matrix Storage driver and that is saying I have AHCI/Native Command Queing enabled. But same benchmark results.
IntelUser2000: What CPU/speed are you using with your SSD?
taltamir: True, my old 7200 RPM drive gets around 1MB random read/write. It's just that other benchmarks are showing that intel drive getting higher scores.
IntelUser2000: I don't seem to have an AHCI option in my BIOS, my motherboard is the intel 965m which uses the ICH8-M southbridge. Does...
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