3800 x2 VS. 4200 x2

[t3hPwnag3]

just wondering do these overclock to the same proverbial wall (2.75ghz)?

looking at buying one and I'll gladly spend the extra $35 and get the 4200+ if it means i can get an extra 200mhz overclock. whatya think?

 

[customcoms]

They all seem to be hitting the same speeds. Is this a S939 or AM2 purchase? The AM2 chips are going higher!

 

[Big Lar]

Get the x2 3800 from the Egg if its a socket 939, as Many have been getting toledo's, and OC'n em to 2.8 at default voltage. Luck of the draw of course as to whether or not you get a good stepping tho.

 

[lopri]

Originally posted by: Big Lar
Get the x2 3800 from the Egg if its a socket 939, as Many have been getting toledo's, and OC'n em to 2.8 at default voltage.

It's been bothering me that A64 CPUs with 1MB L2 cache (per core) are clocking better than the ones with half the L2 cache. Is there any logical explnation?

 

[CupCak3]

i've got my 3800 am2 at 2.72 with 1.35V.... its an 89W version...

 

[formulav8]

I would go ahead and get the 4200+ if it was me. It would be 'easier' to oc I guess since it has a higher multipler, and therefore won't have to have a to worry about having a board that does high fsb speeds.

Example:

Only need a 245mhz or so fsb to get a 4200+ to 2700mhz. You need 270mhz fsb to get 2700mhz speeds on a 3800+.

You should have no problems finding any cheapo board that will do a fsb in the 250's or so. But 270mhz fsb could be fairly hard for some of the cheapo boards. Even though some of the cheapo $60-$70 boards might be able to do it.

But in the end, max oc speeds should be similar.

PS: It could be that Toledo's oc alittle higher than Venice if they are perhaps taken from the FX Bin's, or failed FX bins and labeled as a A64 or whatnot and just needed a small bump in voltage to stretch its wings. Simply my theory, I have nothing to really back it up though.



Jason

 

[KoolDrew]

Considering the 4200+ isn't much more expensive and it has a higher multiplier, I would get it over the 3800+.

 

[t3hPwnag3]

This is 939 socket........I guess i could use the $35 to get a decent cooler though having the extra multi is sweet.

I'm looking at m/b's and i keep coming back to DFI lanparty SLI-D.

You just can't beat it. As far as i'm concerned it's the standard that the other boards want to be.

Why build a 939 system this late in the game? I have 2x512 sticks of XMS 4400 i got off of Ebay for $90.....and it's burning a hole in psyche knowing they can go 277!!! right now i've got em' sitting in my socket A doing 11x207.

I know building a system around ram is kind of silly but have seen what the 2x1gig sticks ddr2 are going for? $250-300 WOW! major butt rapery dude!

 

[jiffylube1024]

Originally posted by: t3hPwnag3
This is 939 socket........I guess i could use the $35 to get a decent cooler though having the extra multi is sweet.

I'm looking at m/b's and i keep coming back to DFI lanparty SLI-D.

You just can't beat it. As far as i'm concerned it's the standard that the other boards want to be.

Why build a 939 system this late in the game? I have 2x512 sticks of XMS 4400 i got off of Ebay for $90.....and it's burning a hole in psyche knowing they can go 277!!! right now i've got em' sitting in my socket A doing 11x207.

I know building a system around ram is kind of silly but have seen what the 2x1gig sticks ddr2 are going for? $250-300 WOW! major butt rapery dude!

The ASUS A8R32-MVP Deluxe is IMO the king of Socket 939 boards. The DFI Lanparty SLI-D and Ultra-D are a close second. I'm omitting the DFI Lanparty Expert (though it is a great board provided you have one of a handful of supported power supplies) because of its finnicky PSU support and extreme pickiness in components in general.

I owned and ran a DFI Ultra-D for about a year and recently switched to the ASUS. Why did I switch? RAID performance mainly. RAID 1 is medicre on the DFI and RAID 0+1 is absolute crap. The Uli HDD controller is much better, and RAID performance is much better.

The chipset fan on the DFI was also a bit of a pain - tucked right under the first PCI-e slot (the 16X slot on the ultra, too :Q), and it got a bit noisy at full load (gaming).

However, the DFI is extremely stable - probably the best board I've ever owned for stability. Overclocking in Windows via Clockgen was an absolute breeze. Just make sure to find your RAM's settings on that board beforehand though -- you need to know all the timings to be able to push it to its limits.

 

[t3hPwnag3]

cool...great advise guys! THANKS!

 

[myocardia]

Originally posted by: lopri
It's been bothering me that A64 CPUs with 1MB L2 cache (per core) are clocking better than the ones with half the L2 cache. Is there any logical explnation?

Yes, the larger caches have higher latencies. As all of us overclockers know, higher latencies (think RAM) equals higher overall speeds.