Hi I have an Infinity 975X I am using a quad core q6600 Overclocked. My bios says it is running at 3003mhz, BUT SIW says the cpu: Property Value MANGLE Summary Number of Logical Processors 4 Number of Physical Processors 1 CPU #1 Intel Core 2 Quad Q6600 CPU Name Intel(R) Core(TM)2 Quad CPU Q6600 @ 2.40GHz CPU Code Name Kentsfield Vendor GenuineIntel Number of Bits 64 Instruction Set MMX, SSE, SSE2, SSE3, SSSE3, ET64, XD, VMX, EST Platform Name Socket 775 LGA Revision G0 Technology 65 nm Original Clock 2400 MHz Original System Clock 266 MHz Original Multiplier 9.1 CPU Clock 2742 MHz System Clock 303.9 MHz FSB 1215.4 MHz Number of Cores 4 Core #1 Speed 1823.2 MHz Multiplier 6.0 Core #2 Speed 1823.2 MHz Multiplier 6.0 Core #3 Speed 1823.2 MHz Multiplier 6.0 Core #4 Speed 2734.7 MHz Multiplier 9.0 Virtual Technology Supported Yes Hyper Threading Supported No Cache L1 Data Cache 4 x 32 KBytes L1 Instructions Cache 4 x 32 KBytes L2 Cache 2 x 4096 KBytes Why does SIW say it is running at just 2742mhz? I have 4gb RAM. My bios says I have 4gb of extended memory which I assume is my RAM. SIW says I have all 4 slots of 1gb running but windows says I only have 2gb. Can anyone help with both the cpu and the RAM and help me make windos use my RAM properly? Thanks Steve
I have done a couple of other tweaks, but not sure if they help or hinder performance. The first thing I have done is disable c1E in the bios. Can anyone tell me what that is and if that is the right thing to do? Secondly I have disabled memory hole remapping. Again is this right and what does it do? I can now see 3gb of my RAM. I have googled the RAM thing and it looks like my 32bit XP wont recognise it. Does anyone know why and a workaround so XP can use all my RAM? I am still perplexed. My bios says my pc is running at 3030 mhz even though the multiplier is locked at 9. It is saying I am at 3030 as if my multiplier was at 10. I do not understand this. Furthermore my SIW and CPUZ both say my processor is running at 2740 mhz which is more consistent with a 9x multiplier. What us PPM function and what should that be set at? So, can anyone help with the weird thing about my cpu and also with the missing RAM? Your help would be much appreciated.
maybe that program has an error? try a different program like cpu-z and see what it says about your clockspeed. for the memory issue, if you're on 32bit windows it will subtract first the amount of ram on your video card, minus any additional shared memory you assigned to graphics, minus an additional amount for system reserved. if you're on 64bit windows look for a remap memory option in bios and set to enable.
Hi I have disabled speedstep but my bios still shows my processor running at 3030mhz. CPUZ and SIW and the computer properties screen still show 2740mhz. I am perplexed. The multiplyer is 9 so I don't understand the discrepency. Regarding the RAM. I am using 32bit XP, is there no way to get it to use all 4gb?
I currently am using windows XP 32bit. I have had 6GB of memory before and my computer would only show 2.25gb. you need 64bit to go any higher. Some will say there are ways around it but I don't know them or if it is true.
C1e is to toggle "CPU c-state C1-enhanced". IIRC, it allows the clock to the CPU to be turned off so it's consuming less power when idle. C states are various power states, the original definition of what they were has been diluted by all the enhancements to CPU power saving that has been added over time. If you are really dedicated (or paid to do it), you can read the CPU data sheet and ACPI specification for more info. BIOS will not be setting any CPU power states, so the CPU should be running flat out while under BIOS control. On the other hand, the OS will manage power states including throttling the CPU's clock. I would have guessed the problem is speed step to start with. It might also be a thermal management issue (slowing the clock to keep the CPU from overheating) or it may be some other power management setting. As for your RAM, I'll bet 2GB of that is being 'lost' to the PCI devices in your system. There is something called "memory mapped I/O". This is a way for devices to receive data through the fast memory bus. in 32 bit mode, there is 'only' 4GB of memory addresses available and some of that is needed by PCI devices. That means your RAM goes unused because the PCI devices get priority (either disable them, or remove them if you don't want them using address space). You can also try enabling PAE or paged address mode. This will allow the CPU to access some of the address space above the 4GB boundary, and that could get you an extra GB or memory under Windows. But you really need a 64 bit OS to use more than about 3GB of RAM. As for the memory hole, what is the context? I know for historical reasons, there was one at at 15MB-16MB and a there may be some others. But I suspect you may be changing the setting that allows PCI MMIO addresses to be placed above the 4GB boundary. That's a really hit-and-miss system. Some cards report they can operate above the 4GB boundary, but something on the card like it's BIOS will need that register and can't access that MMIO space if it's not under the boundary. Video cards are one example, if they are allowed to use memory space above 4GB, almost certainly you will not get video from the card. And with the amount of MMIO they can use, it can be a big problem. I hope that wasn't total gibberish, it all relates to the hardware and I don't really find it easy to explain the parts I know. I can quote specs for the stuff I don't know, but that won't help anyone who is not an engineer working with this stuff
