Explanation of the NB/CPU speed bugs
Aha you see gOtVoltage, things are quite weird and you have to compare to known values. You should always test any setup to know facts. Software reading vs. Physical speed change are two different things. ;)
Have you seen my 14GHz K7.5 benchmarked? :lol2:
I've seen and known about these bugs on both AM2 and AM2+ with Phenom for a long while. They're very constant with AM2 users but easy to catch by the performance. They're typical BIOS bugs. I've spoken and shown them many times.
Keep two basics in mind:
1) Registers can read anything => software which reads registers only, if register is wrong, software which relies on it is wrong.
2) Phenom systems are known to read wrong registers and thus speed values many many times.
3 i) While the actual physical speed/multi of the system can be very different or not changed at all. You can check this by benchmarking only.
Let's take some examples.
You posted this oc 02-24-2008:
http://i168.photobucket.com/albums/u...0htcpu2300.jpg
The EVEREST Ultimate benchmarks of it you posted after (02-10-2008): NB 2800 vs. NB 5600
http://i168.photobucket.com/albums/u.../NB2800mhz.jpg http://i168.photobucket.com/albums/u.../NB5600mhz.jpg
Quick comment: your IMC scores are very low even for 1800MHz IMC, the read is too low. Something seems wrong with the NB clock controller and/or register. Your scores should be higher even if those 1800 was real, even more with X64.
Now me and Achim compared MB RAM/Cache/IMC performance at the same clocks/timings. Have a look at these at 2200/1800/800. I'll choose to compare Achim's 9500 770 scores as the 790 boards were a bit better.
M3A results: http://www.xtremesystems.org/forums/...&postcount=259
K9A2 Platinum results: http://www.xtremesystems.org/forums/...&postcount=950
PC-AM2RD790 results: http://www.xtremesystems.org/forums/...&postcount=566
If your speeds were above 2200/1800 IMC, you should naturally have higher L1/L2 and L3 scores and lower latencies by far. You should have lower memory bandwidth and higher memory latency though due to us having tighter timings =>
http://www.abload.de/img/everest-gangedtp4.jpg
If you compare, your results are much lower than a 1800MHz IMC. The results mainly affected are L3 read bw and latency. Both of yours are low for even 1800 MHz (this bug is giving you poor IMC performance, even worse than stock). If you ran L3 latency which depends on read bw, it would be slow for even 1800MHz. If you look at the other's, they're even higher.
Now I'll show you the very obvious difference of real IMC clocks as Sami (AMD worker/pioneer allround overclocker) showed us a while back and how you can see them done in typical mode, not with services/processes/themes disabled but just the AV/FW paused from an everyday OS.
TEST REAL IMC SPEED
1809MHz (9x) vs. 2211MHz (11x)
EVEREST Ultimate (check the L3)
http://img526.imageshack.us/img526/2...2stock2dy1.jpg
vs.
http://img522.imageshack.us/img522/5...22stockvl2.jpg
WinRAR
http://img526.imageshack.us/img526/7...6winrarte4.png vs.
http://img517.imageshack.us/img517/2...2211winyq8.jpg
See the glaring difference and perf. gain? ;)
I also have near 2.6GHz real speeds benchmarked and plus 7GHz bugged ones benchmarked. Like I said, actual oc IMC requires high volts and is hard.
Compare the 7GHz benchmark, so you know what a bugged reading looks like (actual speed has obviously not changed from 1809).
http://img138.imageshack.us/img138/4341/nbbwevta9.jpg
No real change from stock (minor fluctuation is normal).
Re SPi: your score is actually still not optimized and fair slow for 2300/1800/800. It could get much faster leaving all speeds/timings the same. If even you managed 2200 IMC real, your 1M would be much lower.
HIH. :)
Ok new BETA BIOS out 228.BSTbeta..
Linky
http://www.lejabeach.com/Biostar/TA770A2+/ 228.BST (BETA)not official yet...Stock Biostar
Polygon has a TLB fix already as well..
http://www.rebelshavenforum.com/sis-...;t=000463;p=44
NPTfid and NB working with 9600BE...Thes Bioses still have a long way to go but keep getting better testing the (TLB disabled fix Bios) .. the 228.TBL MOD Works like a charm the NPTfid and NB clocks but memory @ 1066 can be set using 1066divider.. It will default to 800mhz.
NB settings seem to like 2000mhz and lower with HT being set the same...Before this Bios i had to use FSB or AOD to Oc...Now i can raise/lower the Multi along with the FSB:yepp:
http://i168.photobucket.com/albums/u...NPTfidBios.jpg
I am on X64bit..that is the only reason why i am not posting Oc's over 2.5ghz..It just isnt 100% possable ATM...It has to do with the 64bitOS and Bios..Those of you with 32bit OS should be able to crack 2.5ghz with out a sweat on the TA770 with the (Stock Beta228.BST) or (Mod Beta 228.TBL..TLB disabled BIOS..
Like always many thanks to :up: Polygon :up: for his TLB work and other optimizations..Funny he is way fast with these updates.
UPDATE using 228.TLB BIOS MOD from Polygon
The TA770 can do 270+fsb with Phenom! I maxed out my ram 1080mhz @2.3volts with this Bios or i would of gone more...The Biostar Bioses need to be Optimized more fo Higher ram and CPU above 2600mhz!...The 228 Bios is Biostars latest BETA and Polygon has added only the TLB disable option to it...
The screen is CPU@ 2300mhz(8.5x270fsb) im now using 2400mhz (9x270fsb) havnt had chance to Oc more yet...What is nice is before this the TA770 would only do 230/240 max .....Its definatly a learning process:yepp:
http://i168.photobucket.com/albums/u...fsb2300mhz.jpg