XP 1600, 1800, and 2000 overclocks, which flavor?

[pepsimanz]

Going to get a new cpu this weekend, and grab myself a EPOX 8k5A2+ and would like to overclock with pc2700 ram, and an alpha 8045 heatsink

I have heard amazing results with the XP 1600 AGOIAs and was going to get one. However, at GameVE, they also offer OC cpu choices such as a XP1800 agoia, and a XP2000 Aroia

My question is, how well does the XP 1800 agoia and XP 2000 arioa overclocks? I am assuming not as good as the 1600 (166+ FSB), but would the XP 1800 agoia or XP2000 aroia possible to get close?

Does anyone recommends buying either of the two over the XP 1600? I wouldn't mind spending the extra $20 to get the XP 1800 if it will give me a easier time to OC.

In addition, in terms of OC results, would I see a difference if I go with the 8k9a2+ instead of the 8k5a2+.

Thanks. Any opinions will help.

 

[halkebul]

I sense you are an extreme performance seeker, mainly from the fact that you would spend $40+ for cpu cooling. In this case, go with Intel Pentium4 1.8A and 845PE chipset motherboard. Even with retail cooling, you'll get 2.4GHz to 2.9GHz by overclocking.

My Recommendation
--------------------------
Intel Pentium4 1.8A processor (Retail) $140 at newEgg.com
Albatron PX845PEV PRO motherboard $95 at newEgg.com
Mushkin 256MB PC3200 DDR Memory Module $105 at newEgg.com
--------------------------
Total = $340

 

[pepsimanz]

halkebul,

Thanks for the advise. Actually, I already have a P4 platform with a 1.6a OC to 2.32 with 145FSB, running a 512 MB Corsair XMS ram at 4:5 ratio, and I love it. But this time, just want to give AMD a try.

I am currently doing a lot of video editing, DVD ripping, DVD burning on this computer and some of these processes usually take 30min to a couple hours. So, to increase efficieny, it would be nice to utilize a second system to help out with some of these tasks. And my current celeron 333@500 system (My 2nd system) is barely keeping up just on internet browsing and downloading. So, this AMD rig would be my new second computer.

 

[chizow]

Get the XP 1600+....

There's a lot of evidence supporting the theory that the XP 1600's and the 2000+'s are the exact same core, just a slightly lower yield. As companies improve their fab processes, they still need to backfill demand for older cpu clocks to offer their full range of products. At the same time, in an effort to maximize production efficiency and continue to improve their technologies, there's no reason for them to "under-clock" their processing methods. As a result, you have a bunch of CPUs with labels that hide their true capabilities. I wouldn't be surprised if some of these chips are cut from the same wafer of silicon.

You can see this in real-world performance. Typically, if AMD releases a new line of CPUs, say 2000, 2200, 2400, the 2400 might not have much OC overhead. That's because AMD had to really improve their fab process just to get the CPU stable at that clock speed. However, the 2000 and 2200 can often approach the ceiling that the 2400 achieved. The same holds true for existing CPUs, but say for instance, they release a new CPU rated at 2400. If you happen to get an older clocked CPU, say 1800 that has the same STEPPING as the newest CPU, chances are your OC overhead limit will be much higher than the rated speed, and very close to the 2400. That's what you're seeing now with the AGOIA's and AROIA's. Essentially, they are "under-rated" versions of the highest performing and most mature versions of the Palomino.

Oh yah, and the 1600+ will cost ya about 1/2 as much as the higher rated AXP's.....around $55. If you check out some of the forums, you'll see that the XP 1800-2000+'s don't get much more than that 1600+ even at the same stepping.

Edit: It also makes perfect sense as AMD abandoned Palomino b/c they knew they would not be able to scale it much higher without going to a .13 micron process, hence the arrival of T-bred.

Chiz

 

[pepsimanz]

chizow,

Thanks you so much for your advise, I totally agree with you and I am defintely not gonna go for the xp2000.

But how about the XP 1800 AGOIA. I agree with you that all of AGOIA chips are probably the same but marked differently to their speed, so the performance (highest clock speed obtainable) should be very close and the only difference would be the multiplier.

If I don't want to bother unlocking my cpu, I am debating if the XP1800 would be better.

I know the best performance comes with a fastest FSB, so the XP1600 with lower multipler would make more sense, and I have heard of many OC results of 180+FSB stable. But, if this core can hit 180+FSB x 10.5 ~ 1.9ghz. I would rather get a XP1800 (11.5x) and run it at 166FSB with a 1/5 divider running everything else in specs and a syncronized DDR333 ram setting. However, my question is how likely would I be able to get a XP1800 AGOIA to 166FSB with air cooling and a EPOX 8k5a2+? Does anyone have any experience? Would there be any chance that the 8k9a2+ be more OCable? Thanks

 

[EKAtBzboyz]

i say get either one
xp1600+ or xp1800+

if they are both new steppings, naturally they would oc more or less the same i would think

i myself would get 1800+

as for the mobo, are you going for strictly ocing mobo or options mobo?
for ocing i would get epox 8k3a+
for features i would get any one of the ones youve listed
probably 8k5a2+ since ive heard more success stories about it, but its only kt333 board

 

[rogue1979]

I would say the cheapest AGOIA you can get, the 1600+. From the looks of it the yields for XP's are so good, I think every single cpu will hit 2000+ speeds, with maybe only a few being marked for 2100+ speeds. The latest crop of 1600+ cpu's all seem to be reaching 1800MHz, only extreme voltage, cooling or a good batch of luck will get you 1900MHz or above. There are some XP's out there hitting 1900MHz on regular air-cooling, but the 2000+ still won't guarantee that.

 

[chizow]

Originally posted by: pepsimanz
chizow,

Thanks you so much for your advise, I totally agree with you and I am defintely not gonna go for the xp2000.

But how about the XP 1800 AGOIA. I agree with you that all of AGOIA chips are probably the same but marked differently to their speed, so the performance (highest clock speed obtainable) should be very close and the only difference would be the multiplier.

If I don't want to bother unlocking my cpu, I am debating if the XP1800 would be better.

I know the best performance comes with a fastest FSB, so the XP1600 with lower multipler would make more sense, and I have heard of many OC results of 180+FSB stable. But, if this core can hit 180+FSB x 10.5 ~ 1.9ghz. I would rather get a XP1800 (11.5x) and run it at 166FSB with a 1/5 divider running everything else in specs and a syncronized DDR333 ram setting. However, my question is how likely would I be able to get a XP1800 AGOIA to 166FSB with air cooling and a EPOX 8k5a2+? Does anyone have any experience? Would there be any chance that the 8k9a2+ be more OCable? Thanks

If you don't plan on unlocking the cpu, you may give yourself more flexibility with the 1800+ b/c of the higher multi. Depending how good your pc2700 is sticking with the lower multiplier and trying to hit ~180 FSB may be a stretch. The 1/5th multi will definitely help at 166mhz though, and running everything synched is definitely a good idea. You'll also have some flexibility over 166mhz with the higher multiplier, but not as much as with a lower multiplier and increases in the FSB. There's a pretty lengthy thread in this forum or the mobo forum about the AGOIA's and AROIA's...it covers just about every mobo and mem config around, and their OCing results as well. IIRC most people were hitting 1.8 with relative ease, but then again most of them had insane PC3200 memory or better As with any multi-locked cpu, it'll be harder to find out the "Max" of the cpu b/c of the limits of increasing the FSB w/out being able to adjust the multiplier, but you probably are better with a higher multi cpu b/c of the pc2700.

It should be a fun weekend of tweakin for ya, hope it works out


Chiz

 

[Cherub]

I have tested four 1600+ CPUs and have yet to find one that won't do 1800 MHz at 1.82v or less. My current CPU was doing 1909 at 1.82v on air, now 1968 at 1.82v and 2000 at 1.92v on water. I wouldn't even think of buying a 1700+, as they all seem to be the same.

 

[pepsimanz]

Thanks everyone for your advice,

Actually, I decided to go with the XP1600+ to save a little money and go ahead and unlock it. I wasn't going to do it because of the hazzle, but as chizow mentioned, it's difficult to find the highest potential of your chip unless you can play with the multiplier. So with the multipler unlocked, it won't matter if I get a XP1600 or a XP1800.

So, I ordered one from GameVE.com and it's a gurantee AGOIA for $53 shipped. For MB, I am also want some features, so I think i will go with the 8K5A2+. Thanks everyone again for the advice.

 

[dannybin1742]

I have tested four 1600+ CPUs and have yet to find one that won't do 1800 MHz at 1.82v or less. My current CPU was doing 1909 at 1.82v on air, now 1968 at 1.82v and 2000 at 1.92v on water. I wouldn't even think of buying a 1700+, as they all seem to be the same.

you talking stable and able to run prime 95 at 1.82V? that seems a bit low of a voltage to get that oc out of the chip

i've tested a few 1600 agoia cores and two 2000 cores also agoia, and none will do 1.850 or above without 1.95-2.0 volts regardless of multiplier or fsb settings, they will boot but none will run prime 95 without creating errors. i am also running a very nice water cooling rig.

 

[joe4324]

I might have a freak of a chip but I've got an Agoia "Y" 2013, I hear this is one of the best chips out. and from my intial tests it looks like its going to be a MONSTER.

With 256megs of Crucial PC2100 I got it to 1.9 at STOCK voltage. I had booted into windows at 1.75V with 187FSB and it appeared to be stable. But I couldnt keep the ram so I could only play for a few minutes befor i had to give it back. My cooling is only a Swiftech MC370a with a low CFM 80mm. When I get my SK7 and a new fan and some PC3200 I'm going to go for 2Ghz.

 

[dannybin1742]

it appeared to be stable

there is a big difference between being able to boot to windows and being able to run prime 95 for x hours

but if you chip can run that high at default voltage, you're one lucky guy

 

[Stinger32]

newbie question for the day. what is prime 95?

 

[dxpaap]

bump, just to watch this thread

 

[Rafael]

Originally posted by: Stinger32
newbie question for the day. what is prime 95?

Stress test program, to test the stability of the system.

Raf