RAM - FSB problems
Forum Motherboard & Memory : General Motherboard - RAM - FSB problems
Because your processor the E6300 has a FSB of 266mhz the ram runs at a 1 to 1 ratio which is double that of the FSB which is 533mhz. THe ram being 800mhz means it CAN raech 800mhz when you increase the FSB to 400. The cpu has a multiplier of 7 which means 266x7=1860mhz.
So what im saying is theres nothing wrong with your ram! 
| Quote : I was just reading the reviews on Newegg regarding your board, and some additional thoughts come to mind. If your BIOS won't allow you to access the appropriate memory settings to allow you to tweak your DDR 400 (200 x 2) memory, then you can replace your memory with DDR2 533, as you had mentioned. It also appears that your motherboard is capable of being mildly overclocked. You can update the BIOS, purchase DDR2 667, and tweak up the FSB. Some reviews report 315Mhz FSB on the E6300 which is 2.2Ghz. Interestingly enough, some extreme overclockers were able to exceed 400Mhz FSB by hardware volt modding, which would be 2.8Ghz on an E6300. Amazing results for this board! You may want to read the reviews and search the forums for more information to learn what can be accomplished. Sorry I can't provide you with all the links. You'll have to ferret it out for yourself. |
I dunno if he should change the ratio from his 1:1 ratio though. Do you really think he would see an increase in performance. Usually its best to leave it unless its a massive gap.
shamb,
if your gonna fiddle around in the bios you may as well try increasing the FSB a little since you have some headroom in your ram 
Install SiSoft SANDRA
www.sisoftware.co.uk
Run the CPU benchmark and Memory Throughput Test with window maximized.
Screenshot the results.
Usually a 266 base FSB on the current Intel platforms is QDR, which is a 1066 FSB effectively.
I don't know where you are getting this 533 FSB figure from, unless your base FSB is 133 MHz, and your are underclocking the CPU by -50%.
Sounds like RAM ratio is the least of your concerns
PS: 285/266.667 = +7% which means your SATA and PCI bus will get out of sync and fail as the divider for PCI bus hasn't raised.
Tip: Try 300 FSB or 333 FSB, they'll each keep the PCI/SATA bus at 33/100 - so it might be stable. (Well double check the mainboard manual, may they won't raise the divider at all, and give way out of spec PCI/SATA clocks 
)
You want FSB:RAM ratio at 4:3 (1066:400 Dual-Channel) - if not overclocking.
At 300 base FSB (1200 FSB) you'll want FSB:RAM ratio at 3:2 (1200:400 Dual-Channel) instead.
Well, FWIW to me everything looks correct.
CPU-Z says you have an E6300 running at the stock FSB of 266 MHz. Your DRAM is DDR-400 running at its correct clock speed of 200 MHz. You can't run with a FSBRAM ratio of 1:1 using DDR-400 unless you overclock the DRAM ... which is something I'm not sure you want to do, especially with an ASROCK VSTA 775 motherboard. (Actually, I don't even know if it is possible to run 1:1 with DDR-400 with an ASROCK VSTA 775 motherboard. Not sure the BIOS provides that much flexibility).
-john
| Quote : cpu-z says memory frequency is 266 MHz, BUS speed is 266 MHz, while FSB is 1066 MHz...what’s the difference between BUS and FSB (beside the obvious speed discrepancy)? |
It sure is hard to tell sometimes, I'll give you that. Whoever came up with the current naming scheme used to describe the parts connected to the processor bus seems to have wanted to maximize total confusion. (Ah, marketing!)
The one important speed to keep in mind, the one which determines what all the other clock speeds turn out to be, is what I'll refer to as the system clock speed. In the case of a Core 2 CPU running at stock, this is 266MHz. This is the speed that is multiplied by the "multiplier" of the processor to get the actual speed the processor runs at. In the case of an E6300, the multiplier is 7 so the CPU runs at 7*266 = 1,862 MHz or 1.86GHz.
Now I frequently also refer to this "system clock speed" as the "FSB". I probably shouldn't but I do simply because the two are so tightly coupled. The actual or effective speed of the FSB is simply 4 times the "system clock". In this example that is 4*266 or 1,366MHz effective speed. Why four times the system clock? The FSB is "quad-pumped" which appears to mean that 4 units of data are actually transfered on the FSB for each tick of the system clock.
How is this "quad-pumping" done? I have no idea. Is it related/coupled to dual channel memory? Seems likely, but again I really do not know how it works. All I know is that the effective FSB speed is 4 times the system clock speed. However this does seem to dove-tail really nicely with both dual channel memory and DDR DRAM supplying 2 units of data per clock tick. 2 (DDR) * 2 (dual channel) = 4 (quad-pumped).
And then there is your DRAM. The timings there work out as you outlined them. CPU-Z shows the base clock speed, not the effective speed for your DDR memory. You have to multiply this value by 2 to get the DDR2 rating. For example, 2*266 implies DDR2-533.
Depending on the motherboard and BIOS, it is possible to run your memory at a different clock speed than the FSB/system clock is run at. Usually you'll be advised to not do this because running the FSB and DRAM at the same speed (a FSBRAM ratio of 1:1) usually gives you the best throughput.
But as an example, in your case your RAM is DDR2-667 so it can run at a base clock speed of 333MHz. If your BIOS allows it, you could leave the system clock at 266 but run the memory at 333. If you did this the FSBRAM ratio would be 4:5 (I think ... :? Understanding the concept and getting the arithmetic right are two separate issues for me).
Now why not run your RAM at it's fastest speed? Because this will only increase the performance of your system if the RAM speed is your only bottleneck. Usually it isn't, the FSB is. So often instead of running their system clock at "stock" and running their RAM at a higher speed people will instead overclock. If you up your system clock to 333 and maintain a FSB to DRAM ratio of 1:1 your memory will run at it's full rated speed. But you will also get a much larger performance increase from running your CPU at 7*333 = 2,331MHz or 2.3 GHz.
I seem to have run off at the mouth on this reply. Hope what I've said helps some. If it doesn't, just ignore it. Someone else will probably explain it better. This stuff is constantly being rehashed on these boards. Like I said, it is almost as though it was designed to confuse people.
-john
| Quote : if i was to get that MB and use my 2 gigs of ddr1(2x1gig ram)how much can i overclock the E6300 or even the e6400?? |
I actually do not know, of course, but I think I recall people posting that they were able to get the FSB to 300MHz, but not higher. For an E6300 this would be 7*300 or 2.1GHz and for an E6400 this would be 8*300 or 2.4GHz.
The ASRock VSTA 775 motherboard is sort of a "dancing elephant". The wondrous thing about a dancing elephant is that it can dance it all. Trying to get it to tap dance is just cruel and unreasonable.
Likewise the fact that the ASRock VSTA 775 works at all should be enough for you. It's not an overclocker. A quick look at the BIOS would convince you of this. Where other motherboards might allow you to specify a voltage as a decimal value, the ASRock VSTA 775 offers selections of "Low", "Normal", and "High". :?
-john, the redundant, legacy dinosaur
| Quote : if i was to get that MB and use my 2 gigs of ddr1(2x1gig ram)how much can i overclock the E6300 or even the e6400?? |
I actually do not know, of course, but I think I recall people posting that they were able to get the FSB to 300MHz, but not higher. For an E6300 this would be 7*300 or 2.1GHz and for an E6400 this would be 8*300 or 2.4GHz.
The ASRock VSTA 775 motherboard is sort of a "dancing elephant". The wondrous thing about a dancing elephant is that it can dance it all. Trying to get it to tap dance is just cruel and unreasonable.
Likewise the fact that the ASRock VSTA 775 works at all should be enough for you. It's not an overclocker. A quick look at the BIOS would convince you of this. Where other motherboards might allow you to specify a voltage as a decimal value, the ASRock VSTA 775 offers selections of "Low", "Normal", and "High". :?
-john, the redundant, legacy dinosaur
thank you for your response. wich motherbord is a better overclocker and allows me to use my ddr1??
| Quote : thank you for your response. which motherboard is a better overclocker and allows me to use my ddr1?? |
Once again, I honestly don't know the answer to this question. My guess is that there are not a lot of motherboards out there that will support DDR and a Core 2 processor. I think Intel really intended to pair the Core 2 with DDR2 DRAM. So if you want a motherboard you can overclock I think you should look at the newer, DDR2 motherboards. If you want to continue to use your DDR DRAM and move to a Core 2 processor you should probably expect to run no faster than a tad above the stock FSB speed of 266MHz.
Just an opinion/speculation, not claiming it's fact. But it's all I've got. 
-john, the redundant, legacy dinosaur
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