P4G8X PCI Freq Testing

[Mikki]

These tests were done using a PCI Bus Analyzer

AGP/PCI Lock Test

With the freq setting set at 33.3mhz, I tested each fsb setting from 133fsb to 170fsb. The lock worked fine, without so much as a flux.

At regular intervals I ran a benchmark and copied a large file from my cd-rom in an attempt to load the bus, and the freq never wavered.

I also tried setting the freq setting at different freq?s and at different fsb?s and all seemed to work fine.

AGP/PCI Auto Setting Test

This is where it get?s interesting. I set the freq setting to Auto, and then tested each fsb setting from 133fsb to 170fsb. Here are my results:

FSB(mhz)?PCI Bus freq(mhz)
133?33.6
134?33.4-33.5
135?33.7
136?33.9-34.0
137?34.2
138?34.4-34.5
139?34.7
140?34.9-35.0
141?35.2
142?35.4-35.5
143?35.7
144?35.9-36.0
145?36.2
146?36.4-36.5
147?36.7
148?36.9-37.0
149?37.2
150?37.4-37.5
151?37.7
152?37.9-38.0
153?38.2
154?38.4-38.5
155?38.7
156?38.9-39.0
157?39.2
158?39.4-39.5
159?39.7
160?39.9-40.0
161?40.2
162?40.4-40.5
163?40.7
164?40.9-41.0
165?41.2
166?41.4-41.5
167?41.7
168?41.9-42.0
169?42.2
170?42.4-42.5
171?42.7
172?43.0
173?43.2
174?43.4-43.5
175?43.7
176?43.9-44.0
177?44.2
178?44.5
179?44.7
180?44.9-45.0
181?45.2
182?45.4
183?45.7
184?45.9-46.0
185?46.2
186?46.5
187?46.7
188?46.9-47.0
189?47.2
190?47.5
191?47.7
192?47.9
193?48.2
194?48.4
195?48.7
196?49.0
197?49.2
198?49.5
199?49.7
200?50.0
201?33.4-33.5
202?33.6
203?33.8
204?34.0
205?34.1
206?34.3
207?34.4-34.5


PCI Bus Overclocking Test
33.3mhz to 38.7mhz worked as advertised, settings above fluxuated as follows?
39.0mhz = 38.9-39.1mhz
39.3mhz = 39.2-39.3mhz
39.6mhz = 39.5-39.6mhz
39.9mhz = 39.8-39.9mhz
40.2mhz = 40.1-40.3mhz

 

[caboob]

good work, its nice to see independent confirmation that the lock works. Did you use the Vics20 RD2 PCGeiger. I have one and it wouldnt register correctly when I tried to use it on my 8INXP.

 

[Mikki]

Yep, that's the one...did you try the bios settings suggested in the manual? I know it doesn't work on all boards, but it'll work on some boards using those tweaks...good luck!

 

[Thor86]

Thanks Mikki! Good to know.

 

[dbwillis]

Thanks Mikki, this is good to know...

 

[Mikki]

np guys, it's always fun doing a bit of testing...

 

[THUGSROOK]

nice work Mikki

thx for verifying that auto doesnt use a 1/5 divider :Q

 

[Mikki]

 

[jhites]

Thanks for the verification Mikki

I never believe it until I see it posted by the pro's.

 

[THUGSROOK]

whadda ya tryin to say jhites?

gotta admit, X-Isle demo sniffed out that "no 1/5 pci in auto" bug pretty darn well (in my p4g8x review)

 

[jhites]

Originally posted by: THUGSROOK
whadda ya tryin to say jhites?

gotta admit, X-Isle demo sniffed out that "no 1/5 pci in auto" bug pretty darn well (in my p4g8x review)

And that is why you are on my Elite pro's list.

 

[Mikki]

Thugsrook, feel free to add some or all of this to your thread, I'm sure it'll be around a lot longer than this thread will be...

 

[THUGSROOK]

.....not if i post a link

 

[Jgtdragon]

Where can you get one of those PCI Bus Analyzer?
Want to see my board lock work or not.

 

[LastRide]

Nice job Mikki.That is strange 1/5 doesn't work at all on auto.Kind of defeats the purpose of auto doesn't it.:frown:

 

[Technonut]

Originally posted by: Jgtdragon
Where can you get one of those PCI Bus Analyzer?
Want to see my board lock work or not.

Here for $39.99.

 

[Mikki]

Added tests run from 171fsb to 207fsb....

 

[LastRide]

Nice job Mikki.:beer:

 

[Mikki]

Thanks guys, took some effort and a bit of luck to get over 200fsb...

 

[THUGSROOK]

207fsb?
softfsb & p4m?

i like the new sig

 

[Yozza]

Many thanks for your tests.

Have you tested to see if PCI/AGP lock works up to 200MHz FSB and above?

 

[Mikki]

Thugsrook, yep, 207fsb---and I ain't done yet... Thought I'd give the emmy one more go before I sell it...

Yozza, the lock works perfectly up to 170fsb, haven't tested further yet...

 

[THUGSROOK]

bump for good info