I've been away from the computer all day, so forgive the delay. > What is the machine speed reported by the Apple System Profiler.
195MHz, PowerPC G3. This is hardly surprising, since Apple System Profiler for OS9 is significantly older than the PowerPC750FX and probably can't interpret it's "stuff" for lack of a better description. > If you have a motherboard cache installed, remove it. Unfortunately it's soldered down. I tried disabling it using Powerlogix Cache Control, but no dice. > If you have your RAM interleaved, de-interleave it. I'll try that tomorrow. > Run a MacOS ONLY extension set along with CPU. Didn't work with MacOS 9.2.2 base + CPU Director INIT extension. > I am not sure what you are talking about when you say you have a 250 mhz core? That's the CPU's core clock, as opposed to bus clock, cache clock, or RAM clock. That's the information that I get from the Powerlogix Cache Control software, which likewise doesn't recognize the CPU properly, so it could be in error. > did you press and hold your CUDA switch for 7 seconds after installing the new processor? No. The PRAM battery was dead when I got my S900, so I pulled the battery out and left it unplugged while I did my ATX power supply conversion. I booted it up once after I did the ATX conversion w/ my dual PowerPC 604 card just to make sure my soldering was good, then turned it off and unplugged the power supply. The power supply I replaced the S900's dead original with, a 230W generic, didn't like powering a gigabyte of RAM, 7 fans, two CPU's, and a near-full PCI bus. After Xmas, I had a leftover 430W from building my new PC (it needed a SSI power supply), so I put that in the S900 along with the G3 upgrade and a new PRAM battery. I figured going a week without a power supply or a PRAM battery counted as holding the CUDA button for 7 seconds ;) > i'm sure you have tried manufactures site for upgrades. The upgrade comes without a driver CD. The instructions direct you to download CPU Director from the Powerlogix website. > what is the G3 clocking? what are your impressions of the processor? The original PowerPC 740 clocks in at 200 - 266MHz, 750 at 300-500MHz, 750CX at 366-466MHz with on-die 256KB L2 cache, 750CXe at 400-700MHz with 256KB of on-die L2 cache, and the 750FX at 700MHz-1GHz with 512KB of on-die L2 cache (source: IBM). The 750FX is very fast and has lower power requirements than the other G3 processors, so it's usually found in notebooks (new iBooks). The 750FX's bus:core multiplier is set in software up to 20x, which means if you run a 50MHz bus speed and set the multiplier to 20x, the core speed is 50x20=1000MHz or 1GHz (assuming you have a good 750FX and a system that can handle that speed). On-die L2 cache is preferable to the "backside cache", "L3 cache", or whatever you want to call it because it has a short path to the processor and is running at full core speed as opposed to half or less. The backside cache on early G3's and most G4's spawned all sorts of nasty headaches with cache timings, compatibility, etc. IMNSHO, L3 cache is glorified RAM. In my PC, the L3 cache IS the RAM. It's worth noting that processor "speed" isn't really measured in clock frequency, though frequency is useful for comparing processors in the same series, like comparing PowerPC750CXe's to other PowerPC750CXe's. Real speed is defined by how you use your machine and is largely subjective. Also of note is the concept of "instructions per clock" or how much "work" your processor can do per clock cycle. The concept goes like this: imagine a one-armed man picking Apples from a tree at a rate of one Apple per second per arm. Another man with two arms walks up and starts picking Apples at the same rate, but with both arms. Obviously the guy with two arms is going to pick more in the same amount of time. Same story for computers. AMD (who uses this concept as their processors' main selling point) has a highly biased explanation of this available at http://www.amd.com/us-en/assets/content_type/white_papers_and_tech_docs/processo r_performance_whitepaper_v12.pdf for your reading enjoyment. I don't have any numbers for the IPC of various PowerPC processors, though it's safe to say a 750 has a higher IPC than a 604, and PowerLogix effectively claims a higher IPC than a G4 in their 750FX sales pitch: "...users are far better off with this faster G3, than with a slower G4 that might be able to use Altivec in some tasks. In other words, unless you are using Altivec constantly, it is better to have a CPU that runs all tasks faster all the time, than a CPU that runs slower all the time, except for a certain few occassionally used Altivec tasks." My impression is that it's a solid upgrade but you may need to add your own cooling. My XLR8 CarrierZIF adapter came with an aluminum plate for a heatsink and I could never get the clip to fasten over my 750FX. I ended up buying a Swiftech MCXC370 heatsink (aluminum/copper hybrid) and modifying it to attach to my ZIF socket. I chose this heatsink because of its excellent cooling as well as the ease of modifying its retention mechanism. All I had to do was cut a couple of springs a little shorter and bend the clips a little bit. The MCXC370 ships without a fan as end-users are expected to supply a fan to meet their own needs, but I decided to leave one off since the 750FX runs cold and there wasn't any room left anyway. I'm always excited when the machine boots up the first time without giving me any trouble. As soon as I get this CPU Director thing licked, it's going to be hog heaven. I suspect that it's hanging because it depends on some aspect of OS9 that was changed by me using OS9Helper. Then again, it might be the Kingston KNE111TX fast ethernet card that appears to not be working throwing a wrench in the works. I'll work on it some more tomorrow. -Drew B -- SuperMacs is sponsored by <http://lowendmac.com/> and... Small Dog Electronics http://www.smalldog.com | Refurbished Drives | Service & Replacement Parts [EMAIL PROTECTED] | & CDRWs on Sale! | Support Low End Mac <http://lowendmac.com/lists/support.html> SuperMacs list info: <http://lowendmac.com/supermacs/list.shtml> --> AOL users, remove "mailto:"; Send list messages to: <mailto:[EMAIL PROTECTED]> To unsubscribe, email: <mailto:[EMAIL PROTECTED]> For digest mode, email: <mailto:[EMAIL PROTECTED]> Subscription questions: <mailto:[EMAIL PROTECTED]> Archive: <http://www.mail-archive.com/supermacs%40mail.maclaunch.com/> --------------------------------------------------------------- >The Think Different Store http://www.ThinkDifferentStore.com ---------------------------------------------------------------
