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post #4941 of 8112
Quote:
Originally Posted by Jagged_Steel View Post

As fascinating as this discussion about what chips Samsung does and does not use in their products is, I am still wondering what favorite bus/multi combos people are using with their FX's? The AI suite gave me 216 and 217 as bus speeds for different OC's. I had been using 244 on my old 555, it was odd in that it preferred high bus and low multi. I have seen some posts where people are using bus speeds ~260. I tried a couple of random bus speeds in that range yesterday but was not able to get a boot.
increase cpu-nb voltage and you can get over 260
My board can go over 360 with increased cpu-nb voltage
post #4942 of 8112
Quote:
Originally Posted by Jagged_Steel View Post

As fascinating as this discussion about what chips Samsung does and does not use in their products is, I am still wondering what favorite bus/multi combos people are using with their FX's? The AI suite gave me 216 and 217 as bus speeds for different OC's. I had been using 244 on my old 555, it was odd in that it preferred high bus and low multi. I have seen some posts where people are using bus speeds ~260. I tried a couple of random bus speeds in that range yesterday but was not able to get a boot.

You can use whatever combination you like on these chips. The performance difference is very small.

1) If you are overclocking your ram, then adjusting your FSB is optimal to get the desired speed
2) If you are using stock ram settings, then you can just change the CPU multi.
3) Unless you are overclocking your ram, there is no point in increasing the NB speeds, the NB only has to be as fast as your ram speed. (1600mhz - 2400mhz)
4) Tweaking settings with both FSB and CPU Multi can reduce load temperatures for extreme overclocking 4.8Ghz+ (in your case, an aftermarket cooler would be best)

My favourite setup is FSB 220 CPU X 22

A good setup for you would be 220 X 19. I think the 2 Module FX's can do 4.2Ghz at 1.35v.

The only place I was able to get some Samsungs from was EBay.
Edited by ComputerRestore - 7/5/12 at 12:45pm
post #4943 of 8112
Quote:
Originally Posted by ComputerRestore View Post

Quote:
Originally Posted by Jagged_Steel View Post

As fascinating as this discussion about what chips Samsung does and does not use in their products is, I am still wondering what favorite bus/multi combos people are using with their FX's? The AI suite gave me 216 and 217 as bus speeds for different OC's. I had been using 244 on my old 555, it was odd in that it preferred high bus and low multi. I have seen some posts where people are using bus speeds ~260. I tried a couple of random bus speeds in that range yesterday but was not able to get a boot.

You can use whatever combination you like on these chips. The performance difference is very small.

1) If you are overclocking your ram, then adjusting your FSB is optimal to get the desired speed
2) If you are using stock ram settings, then you can just change the CPU multi.
3) Unless you are overclocking your ram, there is no point in increasing the NB speeds, the NB only has to be as fast as your ram speed. (1600mhz - 2400mhz)
4) Tweaking settings with both FSB and CPU Multi can reduce load temperatures for extreme overclocking 4.8Ghz+ (in your case, an aftermarket cooler would be best)

My favourite setup is FSB 220 CPU X 22

A good setup for you would be 220 X 19. I think the 2 Module FX's can do 4.2Ghz at 1.35v.

The only place I was able to get some Samsungs from was EBay.

Thanks for your input, but I don't agree with everything you stated. I am not quite a RAM OC newbie, I am however 1 day in to running this FX-4170, so all of the favorite combos and such are not yet familiar to me. FYI: As I stated in an earlier post, I am already running the 4170 @ 4.5 Ghz and everything is just fine there. I am just looking for some combos up in the 4.7-4.8 Ghz range that people are having luck with to make a few speed runs for grins. At the moment I have no need to run above this 4.5 Ghz level, I would just like to get my top NB and crank up the 16GB of Samsung to it's best performance in this range.
Edited by Jagged_Steel - 7/5/12 at 12:58pm
    
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post #4944 of 8112
jagged,
my favorite settings are
233 x 16 to make a 1864mhz*2 = 3728
256 x 16 to make a 2048mhz*2 = 4096
267 x 16 to make a 2136mhz*2 = 4272
280 x 20 to make a 1866mhz (933 * 3=2800 * 2)= 5600?
thats as far as i got..like them as they give a 1:4 dram to fsb in most cases.no good for the fx though.
Edited by MrPerforations - 7/5/12 at 4:03pm
    
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post #4945 of 8112
for the FX 8150, which is the best FSB:DRAM multiplier?? im currently at 3:16 running my rams @ 2200mhz... FSB = 207
     
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post #4946 of 8112
1:6 ddr3 2133,but with fx you dont need to worry about it,it make's no difference to them.
Edited by MrPerforations - 7/5/12 at 3:57pm
    
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post #4947 of 8112
For fun here are my 2133 results (Ram is rated for 1866 9-10-9 1.5v, running 2133 10-11-10 1.5v for the moment)

Edit: Btw, I cannot find v1.98 anywhere.

2133.jpg
Edited by Lordred - 7/5/12 at 8:16pm
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post #4948 of 8112
Thread Starter 
Quote:
Originally Posted by munnis View Post

increase cpu-nb voltage and you can get over 260
My board can go over 360 with increased cpu-nb voltage

Proof? that is damn high.

are you using an AM2+ board? They love high reference clock for whatever reason.
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post #4949 of 8112
Quote:
Originally Posted by Bubba Hotepp View Post

You're using an old single threaded benchmark (SuperPI=outdated program in an era of more and more software being designed to utilize multiple cores) and using it to determine performance on a CPU designed for multi-threading. That's like taking a Ferrari and testing it in a school zone at 20mph.

No, what I'm doing is comparing a 4-threaded CPU's performance to another 4-threaded CPU's performance on a thread-vs-thread level. If at 1GHz higher clock speeds it can't easily smoke the older processor, there's something wrong. Period. Comparing the 8150 to an Athlon II X4 CPU in a multi-threaded benchmark really is apples to oranges.
 
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post #4950 of 8112
Quote:
Originally Posted by victorzamora View Post

No, what I'm doing is comparing a 4-threaded CPU's performance to another 4-threaded CPU's performance on a thread-vs-thread level. If at 1GHz higher clock speeds it can't easily smoke the older processor, there's something wrong. Period. Comparing the 8150 to an Athlon II X4 CPU in a multi-threaded benchmark really is apples to oranges.

What you're in fact doing is comparing a newer CPU with an older gen CPU vis a vis single threaded with an old program that uses an outdated, old x86 instruction set in an era of programs using accelerators more and more. Give it 2 more years and x86 instruction sets will go the way of the dodo. What are you going to do with superPI then?
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