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#1
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Strange results overclocking an Athlon XP2800+
Hi,
Just built a Pc with Gigabyte GA-7N400 Pro2 motherboard Athlon Barton XP2800+ CPU Crucial 512 DDR400 3200 CL=3 memory (1 stick) Hightech Excalabur Radeon 9600XT video card Maxtor 6Y080M0 Plus 9 80 Gb Serial ATA HDD Windows XP Home + SP1A It's been running now for a week with no problems (other than a problem with SATA and NIS I won't bore you with). Because it's been so stable I decided to try overclocking and assumed the CPU would have it's multiplier locked and I'd have to adjust the FSB. However, I tested this out and it appears that the CPU isn't locked, but I'm getting some strange results. 1. I upped the multiplier from 12.5 to 13.0, and the CPU was recognized as being an XP3000+ with a clock speed of 2162.72 reported by 'Easytune' which is just what I expected. 2. I upped the multiplier to 13.5 and although 'Easytune' reports the speed as being 2245.90 MHz as expected, the BIOS reports the CPU to be an Athlon XP 2255. Any ideas as to why this might be the case? The benchmarks I have run are strange too. Although they are Graphics based benchmarks , I see an expected small increase from 2800 to 3000 but in the case of the move to 3200, 3DMark 2000 and 2001 increase slightly but the 3D Mark 2003 benchmarks actually falls. Here they a 2800MHz 3000MHz 3200MHz 3DMark2000 14,117 14,422 14,805 3DMark2001 12,711 12,839 12,846 3DMark2003 3,965 4,015 3,975 Any comments? Thanks, Harry |
#2
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i`ve noiced a fall in agp performance as my cpu increases. i think it has to
do with the FSB divider and how sensative your graphics card is to bus speed changes. " Hm" wrote in message ... Hi, Just built a Pc with Gigabyte GA-7N400 Pro2 motherboard Athlon Barton XP2800+ CPU Crucial 512 DDR400 3200 CL=3 memory (1 stick) Hightech Excalabur Radeon 9600XT video card Maxtor 6Y080M0 Plus 9 80 Gb Serial ATA HDD Windows XP Home + SP1A It's been running now for a week with no problems (other than a problem with SATA and NIS I won't bore you with). Because it's been so stable I decided to try overclocking and assumed the CPU would have it's multiplier locked and I'd have to adjust the FSB. However, I tested this out and it appears that the CPU isn't locked, but I'm getting some strange results. 1. I upped the multiplier from 12.5 to 13.0, and the CPU was recognized as being an XP3000+ with a clock speed of 2162.72 reported by 'Easytune' which is just what I expected. 2. I upped the multiplier to 13.5 and although 'Easytune' reports the speed as being 2245.90 MHz as expected, the BIOS reports the CPU to be an Athlon XP 2255. Any ideas as to why this might be the case? The benchmarks I have run are strange too. Although they are Graphics based benchmarks , I see an expected small increase from 2800 to 3000 but in the case of the move to 3200, 3DMark 2000 and 2001 increase slightly but the 3D Mark 2003 benchmarks actually falls. Here they a 2800MHz 3000MHz 3200MHz 3DMark2000 14,117 14,422 14,805 3DMark2001 12,711 12,839 12,846 3DMark2003 3,965 4,015 3,975 Any comments? Thanks, Harry |
#3
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" Hm" wrote in message ... 2. I upped the multiplier to 13.5 and although 'Easytune' reports the speed as being 2245.90 MHz as expected, the BIOS reports the CPU to be an Athlon XP 2255. Any ideas as to why this might be the case? If you look again you should see it shows Athlon XP 2255MHz, because the bios can't identify the chip it just shows the speed in MHz. -- Ian A7N8X Deluxe v1.04 Uber Bios 1006 + Sata Bios XP2500 @ 2400MHz Corsair Twinx1024-3200LLPT 200 x 12.0 ATI Radeon 9700Pro 2 x Maxtor 120GB 8MB SATA RAID 0 |
#4
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"Sunbow" wrote in message
news i`ve noiced a fall in agp performance as my cpu increases. i think it has to do with the FSB divider and how sensative your graphics card is to bus speed changes. The same thing happens with Intel chips too. So you are right when it comes to the agp thing. Boost your agp a little, I wish I could say by how much, but, every system is going to be different. Mine = out at about 75Mhs Bus on the Agp. I was trying to tell someone about this on another Overclockers Ng, but don't seem to get through to this person. Right now though, my system is lagging cause I used my 500W Psu on my MSI KM2M A little bit over what I need for one HD one cdr-w and one AGP Radeon 9000, more like 'Overkill' on power, I don't think I need that much. I am planing on getting more drives for it, I just didn't get there yet. Heh? Cpu? Sorry, AMD 2000+ I like this system, it's my first AMD Xp system, I've never put one together before this one. There was also a time I thought I'd never have anything but Intel's chips too, I guess old dogs can learn new tricks. 'Easytune' or Easytune4, don't always go by what it reads for speed. cpu-z is better, and sometimes 'Eeasytune' is wrong. My settings on the 2000+ All normal, I'm not overclocking it @ all. My P4, the one I'm writting this on, 2.6 GHz @ 3.23 GHz But with the PSU, it runs more like 3.20 or below. Happy with the AMD :-) very. Sorry to ramble on like that. Denny. :-) Always with a smile, even if times are bad. m" wrote in message ... Hi, Just built a Pc with Gigabyte GA-7N400 Pro2 motherboard Athlon Barton XP2800+ CPU Crucial 512 DDR400 3200 CL=3 memory (1 stick) Hightech Excalabur Radeon 9600XT video card Maxtor 6Y080M0 Plus 9 80 Gb Serial ATA HDD Windows XP Home + SP1A It's been running now for a week with no problems (other than a problem with SATA and NIS I won't bore you with). Because it's been so stable I decided to try overclocking and assumed the CPU would have it's multiplier locked and I'd have to adjust the FSB. However, I tested this out and it appears that the CPU isn't locked, but I'm getting some strange results. 1. I upped the multiplier from 12.5 to 13.0, and the CPU was recognized as being an XP3000+ with a clock speed of 2162.72 reported by 'Easytune' which is just what I expected. 2. I upped the multiplier to 13.5 and although 'Easytune' reports the speed as being 2245.90 MHz as expected, the BIOS reports the CPU to be an Athlon XP 2255. Any ideas as to why this might be the case? The benchmarks I have run are strange too. Although they are Graphics based benchmarks , I see an expected small increase from 2800 to 3000 but in the case of the move to 3200, 3DMark 2000 and 2001 increase slightly but the 3D Mark 2003 benchmarks actually falls. Here they a 2800MHz 3000MHz 3200MHz 3DMark2000 14,117 14,422 14,805 3DMark2001 12,711 12,839 12,846 3DMark2003 3,965 4,015 3,975 Any comments? Thanks, Harry |
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