If I were to buy a Thuban...

[VirtualLarry]

Which one should I get? The 1055T, or the 1090T?

Sure, the 1090T has the unlocked multi for uber overclocking, but both chips max out at around 4Ghz anyways, so is it really worth the extra 33% cost, just for ease of overclocking?

Wouldn't the 1055T OCed to 4Ghz actually be slightly faster than the 1090T OCed to 4Ghz on multi alone? So therefore wouldn't it represent a better value?

What HTT speed do you need to OC the 1055T to 4Ghz, and what mobos support that HTT? I think most mobos will do 250 HTT easily.

Edit: 14 base multi times 286 HTT equals 4.04Ghz clock speed. So the mobo would have to do 286 stable. That seems more limiting to me.

 

[alyarb]

the 1055 is the popular one and there are plenty of happy campers reporting 4+ GHz. there are many OC databases you can google. the median is probably still 3.8, though. I would not pay $100 extra for the unlocked multi unless you are specifically looking for 4.2-4.4 GHz. otherwise I would get the 1055T and be confident with a quality 790/890 board. lots of people are reporting 4 GHz. some more.

 

[lopri]

4000/14 = 285.7

You need a board that will comfortably do 300 HTT. Memory will be a factor, too. Granted there are many dividers for you to choose sometimes certain dividers don't like certain range of HTT, etc. That's largely out of your control.

I think most boards will do 300 HTT without an issue (boards with IGP tend to be more tricky), but another thing to keep in mind is that running high HTT for a long term may cause trouble down the line.

 

[TurtleCrusher]

I seriously don't think 3.8ghz vs 4.2ghz Thuban is noticeable AT ALL. Unless you are looking at maximum efficiency in folding (or the likes) you wont notice a single difference in games and most apps. 3.6ghz is around floor to OCing Thuban so if you go into it expecting that you should be fine.

 

[ZipSpeed]

I'm really happy with my 1055T @ 3.5 GHz. Good balance between performance, heat and voltage.

 

[richierich1212]

Memory will be more of a limiting factor than the mobo, me thinks. What mobo do you have now?

 

[VirtualLarry]

Well, I would be purchasing new mobos to go with these chips. Looking at possibly 890FX or 890GX. Something AM3, that would be compatible with BD's AM3 version in the future. Something future-proof, which would likely mean SATA6G and USB3 support. I tend to like Gigabyte boards, they have been very reliable for me.

Unsure at this point if I need Crossfire. If having an IGP onboard lowers my potential HTT overclock, then I guess I would prefer a higher HTT than having an IGP for backup purposes.

Been pretty happy with my P35-DS3R v1.0 boards, although one of my dual-core E2140 machines did have long-term stability issues when overclocked to 400 x 8. Unsure if it's the board or the chip, but the system would reboot every week or so, unless I lowered the OC to 350 x 8. System just wasn't stable at all at 400 x 7 for some reason.

Was thinking of some Gskill ECO series (1.35v) DDR3 to complement the system. Figured those would be better overclockers, since they were starting at lower volts. Heard there was one model that's CAS7 and DDR3-1600 @ 1.35v.

http://www.newegg.com/Product/Produc...82E16813128441
Is this the ONLY 890FX mobo that Gigabyte makes? It's the only one that seems to be listed on Newegg, and it's a little pricey for my needs. Hmm, it's listed at $179, but in the reviews, there was this comment:
Other Thoughts: of my research this seems to be the most bang per dollar . at $129 how could you go wrong and its a Gigabyte????

That board got someone over 4Ghz with a 1055T at XS: http://www.xtremesystems.org/forums/showthread.php?t=251055

What heatsink do I need? Can I hit 4Ghz on the stock heatsink with four heatpipes, or do I need to invest in something like a Hyper 212+? Do I need to remove the stock AM3 backplate for the 212+, or does it clamp right in like a standard AMD heatsink?

Crosshair IV hit 360 HTT: http://www.techreport.com/articles.x/18825/10

 

[F1shF4t]

I got a 1090T just cause I'm too lazy now to spend lots of time overclocking
Set multy for 3.8ghz, voltage to 1.3, NB to 2.6ghz @ 1.15v. 200+ runs linpack stable.

 

[LoneNinja]

I'm in this same debate, if I get Thuban I want to reach 4.0Ghz, but at the same time the extra $100 is steep. My Athlon II X4 630 is sitting 14 x 250 right now, it's on a Gigabyte GA-MA78GM-S2HP, and I know this board won't do 265 HTT. I've got 2 Biostar 790GX boards and they both give out around the same HTT, not sure if it's an AM2+ issue or the fact all 3 boards are <$100. Doesn't really bother me though, since my other processors have all been BE since the Athon X2 5000 BE was released.