Caribou007
New Member
- Joined
- Jul 7, 2013
I'm overclocking my FSB and using the BIOS Memclock to CPU Ratio Limiter.
The selections look exactly like this:
1:1 (DDR 200)
4:3 (DDR 266)
3:2
5:3 (DDR 333)
2:1 (DDR 400)
When I set the FSB to 231 and the divider to 5:3, CPU-Z reports my DRAM frequency to be 198MHz. Shouldn't I be getting 192.5MHz?
When I set my FSB to 241 and the divider to 3:2, CPU-Z reports my DRAM frequency to be 198MHz. Shouldn't I be getting 180.75MHz? Setting the FSB to 240, CPU-Z reports the DRAM frequency to be 197.2MHz. That is slightly below the 198MHz, which makes sense.
When I set my FSB to 250 and the divider to 3:2, CPU-Z reports my DRAM frequency to be 196.4MHz. Shouldn't I be getting 187.5MHz? This is really strange because I increased my FSB and left the divider at 3:2, and it resulted in a lower DRAM frequency. Does changing the CPU Multiplier explain this?
I ran Windows XP 32-bit with a 243MHz FSB and 3:2 limiter for three years without any problems. Now I upgraded my CPU and set the FSB to 241MHz and the limiter to 3:2 and my system has frozen when using foobar2000, Chrome and Youtube, Control Panel and Windows Update, StarCraft 2, and just idling at the Start Screen or using File Explorer.
I've ruled out bad memory with a 12 hour memtest86 run (with the FSB set to 200 and limiter to 2:1). I've ruled out CPU instability with a 27.5 hour prime95 run. I've ruled out heat. It's frozen after trying the following troubleshooting measures: Increased PCI latency delay, increased video card voltage, disabled video card control services and startup items and disabled video card overclocking, disabled audio device startup item, removed PCI audio device and switched to onboard audio device and disabled it's startup item, disabled sleep mode, switched from video card manufacturer driver to basic Windows video card driver, increased RAM TRP to 3, increased RAM CL to 2.5, unplugged all peripherals except mouse, keyboard, monitor, ethernet and 1/8" stereo jack, increased hypertransport from 3x to 4x, and disabled Windows Update.
I suspect either the BIOS Memclock to CPU Ratio Limiter, the 1/8" stereo jack connection with my new speakers, Windows 8 itself, an undiscovered hardware short or the 2MHz underclock on the memory to be the causes. Right now I'm trying to get the DRAM frequency closer to 200MHz, but I'm running into the heat limit by pushing the voltage up high enough to get the FSB there, and I have to go a long way down to use a higher Memclock to CPU Ratio.
What's the deal with the DRAM frequencies I'm getting? And do you think that a 2MHz underclock on the RAM explains the freezing? Should I try loosening some timings next, and if so, which ones?
Thanks very much for your help.
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Edit:
AMD Dual-Core Opteron 180
Asus A8V-Deluxe
OCZ EL DDR PC3200 Dual Channel Platinum
SAPPHIRE Radeon HD3850 512MB GDDR3 AGP
Onboard Reatek AC'97
Stereo Speakers
Earthwatts 550W PSU
USB Mouse 1000Hz
PS/2 Keyboard
1x SATA Disk Drive
1x DVD Disk Drive
1x USB Front Panel
1x eSATA Front Panel
1x Ethernet Cable
The SPD has the CAS Latency set to 2.5 but it's actually 2. I read on a forum that this was because of an issue with a particular set of motherboards, (not mine).
+ + + + + + + + + + + + + + + + + +
The selections look exactly like this:
1:1 (DDR 200)
4:3 (DDR 266)
3:2
5:3 (DDR 333)
2:1 (DDR 400)
When I set the FSB to 231 and the divider to 5:3, CPU-Z reports my DRAM frequency to be 198MHz. Shouldn't I be getting 192.5MHz?
When I set my FSB to 241 and the divider to 3:2, CPU-Z reports my DRAM frequency to be 198MHz. Shouldn't I be getting 180.75MHz? Setting the FSB to 240, CPU-Z reports the DRAM frequency to be 197.2MHz. That is slightly below the 198MHz, which makes sense.
When I set my FSB to 250 and the divider to 3:2, CPU-Z reports my DRAM frequency to be 196.4MHz. Shouldn't I be getting 187.5MHz? This is really strange because I increased my FSB and left the divider at 3:2, and it resulted in a lower DRAM frequency. Does changing the CPU Multiplier explain this?
I ran Windows XP 32-bit with a 243MHz FSB and 3:2 limiter for three years without any problems. Now I upgraded my CPU and set the FSB to 241MHz and the limiter to 3:2 and my system has frozen when using foobar2000, Chrome and Youtube, Control Panel and Windows Update, StarCraft 2, and just idling at the Start Screen or using File Explorer.
I've ruled out bad memory with a 12 hour memtest86 run (with the FSB set to 200 and limiter to 2:1). I've ruled out CPU instability with a 27.5 hour prime95 run. I've ruled out heat. It's frozen after trying the following troubleshooting measures: Increased PCI latency delay, increased video card voltage, disabled video card control services and startup items and disabled video card overclocking, disabled audio device startup item, removed PCI audio device and switched to onboard audio device and disabled it's startup item, disabled sleep mode, switched from video card manufacturer driver to basic Windows video card driver, increased RAM TRP to 3, increased RAM CL to 2.5, unplugged all peripherals except mouse, keyboard, monitor, ethernet and 1/8" stereo jack, increased hypertransport from 3x to 4x, and disabled Windows Update.
I suspect either the BIOS Memclock to CPU Ratio Limiter, the 1/8" stereo jack connection with my new speakers, Windows 8 itself, an undiscovered hardware short or the 2MHz underclock on the memory to be the causes. Right now I'm trying to get the DRAM frequency closer to 200MHz, but I'm running into the heat limit by pushing the voltage up high enough to get the FSB there, and I have to go a long way down to use a higher Memclock to CPU Ratio.
What's the deal with the DRAM frequencies I'm getting? And do you think that a 2MHz underclock on the RAM explains the freezing? Should I try loosening some timings next, and if so, which ones?
Thanks very much for your help.
+ + + + + + + + + + + + + + + + + +
Edit:
AMD Dual-Core Opteron 180
Asus A8V-Deluxe
OCZ EL DDR PC3200 Dual Channel Platinum
SAPPHIRE Radeon HD3850 512MB GDDR3 AGP
Onboard Reatek AC'97
Stereo Speakers
Earthwatts 550W PSU
USB Mouse 1000Hz
PS/2 Keyboard
1x SATA Disk Drive
1x DVD Disk Drive
1x USB Front Panel
1x eSATA Front Panel
1x Ethernet Cable
The SPD has the CAS Latency set to 2.5 but it's actually 2. I read on a forum that this was because of an issue with a particular set of motherboards, (not mine).
+ + + + + + + + + + + + + + + + + +
Last edited:
