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In Reply to: Re: 11. [New] Lower System RAM posted by cics on May 3, 2007 at 09:07:22:
With CPU-Z I'm still retaining 4MB L2 Cache with FSB & RAM set to 200MHz.I don't get any improvements with foobar's file buffer either. And as far as setting the buffer to 100ms - I should mention I'm using version 0.8.3 with an exe ASIO (dll). So in my ASIO output settings, the buffer option is (0-63). Mine is set to 0.
As for CPU load when playing 24/96, it still only peaks at 3%. It doesn't make sense that CPU load has anything to do with how low I can set my sound device latency.
And if you want to try RAMDisk, I'm using SuperSpeed's version. (See link below) You can download a trial version and decide. You're right though, I'm using 1 GB RAM (I actually bought 4 sticks to use for graphic design work, but obviously using only 1 stick sounds best for audio). I set the RAMDisk to 512MB and yes that means I can only copy 1 CD. It's a tough trade-off, but the improved sound quality sold me.
Follow Ups:
for the 200/200 configuration?
On latency issue - I had similar problems which was resolved with Foobar buffer set to 100ms. Larger buffers put more load on CPU and could result in premature dispatching to soundcard which requires data realtime. Don't know about Foobar 0.8.Try using SuperCache ii (desktop version) - this gives RAM playback without having to load each CD into RAM when using RAMDisk. I've set it to Read Ahead 1MB (equivalent of 6 seconds) - you get about 40-50 disk accesses per track. I can't tell the difference when entire track is played from RAM vs ReadAhead. No need to have Foobar do any buffering. You need WMI and DCOM Server Process Launcher services running for this setup. It's an improvement over doing standard Windows disk IO even with added services and cache ii running. In your case you could drop RAM from 1GB to 512MB.
I had to increase RAM to 512MB as I couldn't get cache ii to work @ 256MB. Biostar mobo allows lowest RAM clock speed of 266MHz, so couldn't get 200/200 option to work (I suspect this causes L2 cache drop as I can only do 266/200).
I've had an interesting thing happen with my Zalman PSU (it failed) so I switched to Enermax PSU. Now this gives me best results with 256MB RAM and no cahche ii. I'll do a separate post.
Are you guys using the SRC resampler in foobar verison 0.9?
I was using it for the .8 version, but I neer checked to see if it would work in the .9 version or if I had to somehow get a newer version.
I'm sure I'd have to change the buffer settings.
I have my asio settings buffer at its lowest and foobar buffer set to 50,000 Kb or something, and I remember my system needed extra buffering to run SRC. I also remember that it sounded very good, but nowhere near how good it sounds now with all the tweaking done within the last few months. Check my latest affinity post for some more interesting settings to test.
http://www.audioasylum.com/forums/pcaudio/messages/20187.html
I think this was another significant leap for me.
I have not tried any special memory settings or underclocking or bus speed matching (don't really know how) so i hope I'm not missing to much by just buffering from my sata drive into foobar. I don't have any long pauses that I can tell, and if I remember I think that only happens with asio buffering, but I'm not sure.
I'm using foobar 0.8.3 and have been using SRC with that version. But now I'm hearing better results doing offline processing with Voxengo r8brain Pro to 24/96 WAV files (and eliminating SRC DSP in foobar).As for foobar buffer settings - I leave all those at 0. Lower latency is better. And IMHO foobar buffer mucks it up.
The memory settings/underclocking/bus speed matching was a significant leap for me - sorry to tell you, I think you might be missing out. And playing from RAMDisk instead of HDD was also significant.
You said you "don't really know how". Well, the first step is to get yourself CPU-Z. (see link below) This program will tell you what all your speeds are set at. The next step is to adjust these speeds in your BIOS.
I'm going to continue putting off my curiousity to revisit upsampling until I have the rest of the PC optimizations perfected.
And I'll play with setting the foobar buffer to zero and listen.
My question now has to do wth the fact that my media server is used to play movies as well, and since i still beleive that I don't know what I'm doing when I change bios settings, will my HD abd DVD video watching, web surfing, file downloading, web browsing...performance suffer by underclocking anything..This is my only pc at the moment.
Also, I've had cpu-z, but that's as far as I got.
Core speed=2793 MHz, Multiplier=14, FSB=199.5 MHZ, BUs Speed=798 MHz, Voltage is 3.072, Memory Frequency=266 MHz.
Will my Dell system Bios even let me change anything, and if so, what do I need to change?
It corrupted Windows and other stuff. Its incompatible with SATA RAID and I'm rebuilding transport...
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