Verite/DMAtest and performance

I posted before, but I really need to know. I have Intergraph Reactor, P166, and running an 83mhz bus speed. I run the DMAtest and get 138.7m/b per sec for DMA. Is this good? PCI Latency at 255. DMA ECD mode at 3. What are you guys getting????? wes

Since he's running at the 83mhz bus speed, it really can only be one of a few boards. Most likely it's the Asus P/I-P55T2P4, but it could also be an M-Tech R-534 or Gigabyte GA-586S. I don't know of any other boards that can run at 83mhz. -- Emory University Graduate School of Arts & Sciences The IWCCCARS Project: Q & A Representative Nascar Setups Page: http://userwww.service.emory.edu/~ebusch/

>I have Intergraph Reactor, P166, and running an 83mhz bus speed. >I run the DMAtest and get 138.7m/b per sec for DMA. Is this good? >PCI Latency at 255. DMA ECD mode at 3. I have an old Tyan Titan III MB (P-133). Award 4.51 BIOS (no PCI latency settings) 67 MB/sec MR BIOS (PCI latency settings have no effect) 11 MB/sec AMI BIOS (various PCI latency settings) 67-112MB/sec I read a msg somewhere that PCI latency over 96 clks can sometimes cause problems with ISA cards. ---------------------------------------------------------------------- This space intentionally left blank

I have the Asus P55T2P4 Rev 3.1. It runs at 83 and 75 mhz also. wes

It's great.......30 or 40 is poor.......80+ is as good as it gets.

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>I posted before, but I really need to know. >I have Intergraph Reactor, P166, and running an 83mhz bus speed. >I run the DMAtest and get 138.7m/b per sec for DMA. Is this good? >PCI Latency at 255. DMA ECD mode at 3. >What are you guys getting?????

I too have am running a 83x2 P166 (Asus). I had never messed with the PCI latency timer before I read your post. I was getting DMA scores around 100 with the default setting of 32. I changed the clock timer to 255 like yours and my DMA test score went to 145!!! Whats going on here? What does this timer do? N2 doesn't appear to be any faster.. By the way, going to an 83 mhz bus is one of the easyest and cheapest way to upgrade your system. My 83x2 benches better or nearly better than most P200s. The thing is as solid as can be, not one crash in the month I've been using it. HG

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>I posted before, but I really need to know. >I have Intergraph Reactor, P166, and running an 83mhz bus speed. >I run the DMAtest and get 138.7m/b per sec for DMA. Is this good? >PCI Latency at 255. DMA ECD mode at 3. >What are you guys getting????? >wes

I had never messed with PCI Latency timing before I saw your post so I thought I'd play. I too have a new Asus board and am running at 83x2. With the default setting of 32 I was getting DMAtest scores around 100. Bumped it up to 255 and now get scores of 145!!! I can't really see any difference in N2 though. Does anyone know what this timing setting does? By the way, getting a board with a 83 mhz bus is one of the best and cheapest ways to upgrade. My 83x2 benches faster than by friends P200. Check out http://sysdoc.pair.com/ for more info. HG

Game performance seems to Max out at about 90mb/sec or so. Any DMA performance above that level has no noticeable effect. Yes, a P166 running at 83x2 is quite fast. I'm actually looking at running a P200 at 80x2.5 (208mhz) or 75x3 (225mhz) depending on weather I get an HX or VX board. -- Emory University Graduate School of Arts & Sciences The IWCCCARS Project: Q & A Representative Nascar Setups Page: http://userwww.service.emory.edu/~ebusch/

Eric, I run my P200 at 83x2.5. I also tested with 75x3, and 83MHz bus is faster than 75MHz. I'm yet to try 83x3 (250MHz) ... :-) --- Henrikki (Hena) Hakkanen Tel. +358-(0)9-345 5538 -------------------------------------------------------------- Disclaimer: Opinions expressed here are mine and does not necessarily reflect those of my employer!

Once you reach around 90Mb/sec I find it makes NO difference in Nascar2. You may want to adjust your PCI latency so that you get around 90 in the DMA tests, and does not impact the rest of the system by maxing out the timer. I am running the same board (Asus p55t2p4) at 66Mhz (x3) with a P200 processor and getting right around 100Mb/sec with the timer set to 64. In other words, people with DMA transfer rates of more that 100Mb/sec are like people with 512MB or RAM in their home pc...sounds COOL, but what the heck are you going to use it for?(Smile) Go high! Go high! -Andy ---------------------------

I know the 83x2.5 will be faster than the 75x3, but as far as I know no VX board (which I want for SDRAM support) has the 83mhz bus speed. BTW, as long as you properly cool the CPU (to keep it's operating temperatures in the working range of -25C to +80C), it's technically possible to run it at any speed. -- Emory University Graduate School of Arts & Sciences The IWCCCARS Project: Q & A Representative Nascar Setups Page: http://userwww.service.emory.edu/~ebusch/

>I run my P200 at 83x2.5. I also tested with 75x3, and 83MHz bus is >faster than 75MHz. I'm yet to try 83x3 (250MHz) ... :-) Would an STB Lightspeed 128 feel OK at 75-83 MHz bus speeds? Sincerely, Karim ---------------------------------------- Warning: e-mail address protected by Anti-Bot Protection:) Please double any reply with an e-mail. My ISP loses them less often :(

While STB would probably disagree, but I have yet to hear of any PCI cards having trouble at these speeds. -- Emory University Graduate School of Arts & Sciences The IWCCCARS Project: Q & A Representative Nascar Setups Page: http://userwww.service.emory.edu/~ebusch/