K6-III+ APZ vs ACZ \ VOGONS

K6-III+ APZ vs ACZ

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First post, by ibm5155

Posted on 2015-07-02, 13:42

ibm5155 Offline

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Posts: 318
Joined: 2013-08-13, 23:46

so, I was looking for a K6-III+ and I found two types, both at 450MHz
K6-III+ APZ 450
K6-III+ ACZ 450
so, is there any difference on it? I did some searching and I actually found nothing 🙁

Reply 1 of 1, by blank001

Posted on 2015-07-02, 14:14

blank001 Offline

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Joined: 2015-05-09, 19:25

APZ is lower voltage. There is a thread floating around here where someone compared overclocking like 20 or so 450 k6-iii+ chips and the APZ on average required far less voltage.

here: K6-3+/450 overclock tourney: ACZ vs APZ

The data (I didn't input the 2.2+ category, so it's conservatively assuming those two that can't do 2.2 can do 2.2):

1> x
2 [1] 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 1.9 2.1 2.1 2.1 2.2
3> y
4 [1] 1.9 1.9 2.0 2.0 2.1 2.1 2.1 2.1 2.1 2.2 2.2 2.2 2.2 2.2 2.2

It looks like there's almost a p-value < 0.05 difference between the two:

1> t.test(x, y)
2
3  Welch Two Sample t-test
4
5data:  x and y
6t = -2.002, df = 25.02, p-value = 0.05624
7alternative hypothesis: true difference in means is not equal to 0
895 percent confidence interval:
9 -0.140448347  0.001986808
10sample estimates:
11mean of x mean of y 
12 2.030769  2.100000

smaller variance on the APZ voltage

1> mean(x)
2[1] 2.030769
3> mean(y)
4[1] 2.1
5> sd(x)
6[1] 0.07510676
7> sd(y)
8[1] 0.1069045

_: K6-III+ 450apz@550, P5A-B, 128Mb CL2, Voodoo 5500 AGP, MX300, AWE64 Gold 32mb, SC-55v2.0
_: Pentium III 1400 S, TUSL2-C, 512Mb CL2, Voodoo 5500 AGP, MX300

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