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Sandy Bridge-> Ivy Bridge LGA1155

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dougri

Member
Planning on upgrading my ancient desktop system this year as I transition my video library from optical media to streaming. Mostly DVDs, but an increasing number of BDs. Thus, transcoding is the primary consideration for my computing needs. I'm considering between an SB setup or an i7-8xx setup. I plan on overclocking either system to a good performance/power balance (e.g. ~3.6 or 3.8GHz for i7, 3.8-4GHz for SB???).

Anyway, I expect the unlocked SB i7 to be a bit beyond what I'm willing to spend, so I'm primarily focusing on the unlocked i5 SB and comparing against the i7-870 or 875k (whichever I can get for less at microcenter). I do not believe the difference in performance of SB is worth the cost (to me) once OC is considered, unless there is a clear upgrade path to Ivy Bridge (IB) and 6-8 cores down the line.

From what I've seen, Intel plans socket compatibility for IB with LGA1155, but I'm feeling dejavu, as I previously had an LGA775 mobo that I could not upgrade past Pentium D. If I felt reasonably confident that a 6 or 8 core upgrade path existed for a nice 1155 mobo, I would go the SB path... can anyone speak to this likelihood? Are certain mobo manufacturers better at assuring upgrade path than others? Also, if anyone has specific knowledge as to a better HD transcoding path (with a premium on quality since some streaming will go to 135" front projection) expected from AMD or Nvidia, please give details. I do not expect the onboard transcode engine on SB to exceed the capabilities of the chips (being able to outperform a current mobile i7 is one thing. being able to outperform a future, overclocked desktop processor is entirely another 🙂.
 
I think for high quality transcoding, x264 is the way to go. It runs very well on Intel, but is also pretty good on AMDs. If you can wait I'd have a look at BD but if you must buy now, I'd say wait a bit and get 2500k sandy which is pretty potent, it runs close to a i7 8xx and will be about 200-250 at debut.
 
I think SB is supposed to have a dedicated hardware transcode unit that'll rock at this sort of task, plus GPU offloading.
 
Sp12 said:
I think SB is supposed to have a dedicated hardware transcode unit that'll rock at this sort of task, plus GPU offloading.
Click to expand...

The demo at IDF looked great for a laptop, and was compared against a laptop in doing the same task. BUT... ~14s to transcode a 1080p 30Mbps 3min clip to 30fps ipod touch (at unknown quality) is likely slower than CPU encode. I doubt they have a different transcode engine for the desktop chips. Good for offloading the CPU, but by no means better than current i7/x6 at that task, and probably worse than SB CPU (albeit at lower power). I doubt the transcode engine will be of much benefit to those looking for the highest quality transcodes for streaming to larger screens @1080p.
 
dougri said:
Thanks for the link... I guess I'll wait until January and see what all the secrecy is about 😀
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I was going to enlighten you on that subject but I see Who got ya thinking more correctly. SB is more than Penryn and is going to rock the cpu market.
 
pm said:
Thanks for the link. I have to say... that's a tough crowd over there at Doom10.
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Ya they are! It seems it was a misunderstanding and they seem to be working out there issues. Miss communacation! Ya see how important the tower of bable was. Were would we be if we all spoke the same language in the world . I pretty sure the World would be a better and safer place to live.
 
epsilon84 said:
The i7 2600K is slated to cost ~$300 which is about what the 875K costs right now anyway (minus Microcenter discounts and whatnot, but whose to say there won't be 2600K deals at MC as well?).
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there is always the i5 2600K slated for ~200. yeah he loses HT, but he gets a nice unlocks quad core 32nm, and has the option to atleast maybe go up to i7 later once prices drop when ivy hits(if they do, and if all i7 isnt triple channel with sandy, ihavent read about those specifics yet)
 
Zargon said:
there is always the i5 2600K slated for ~200. yeah he loses HT, but he gets a nice unlocks quad core 32nm, and has the option to atleast maybe go up to i7 later once prices drop when ivy hits(if they do, and if all i7 isnt triple channel with sandy, ihavent read about those specifics yet)
Click to expand...

No Sandy Bridge/LGA1155/2nd Gen Core are all Dual Channel RAM. Dual Channel RAM will continue for some time to be used by mainstream platforms from Intel.

Quad Channel in LGA2011 (LGA1366 replacement/desktop/server) should be interesting together with increased number of Cores in 2H 2011.
 
I'm from Malaysia, and as of 14 December, the Sandy Bridge chips along with their mother boards are available on sale already. Prices match the RRPs listed.
 
smangular said:
No Sandy Bridge/LGA1155/2nd Gen Core are all Dual Channel RAM. Dual Channel RAM will continue for some time to be used by mainstream platforms from Intel.

Quad Channel in LGA2011 (LGA1366 replacement/desktop/server) should be interesting together with increased number of Cores in 2H 2011.
Click to expand...

awesome thanks for that info!

loon: cool!
 
smangular said:
No Sandy Bridge/LGA1155/2nd Gen Core are all Dual Channel RAM. Dual Channel RAM will continue for some time to be used by mainstream platforms from Intel.

Quad Channel in LGA2011 (LGA1366 replacement/desktop/server) should be interesting together with increased number of Cores in 2H 2011.
Click to expand...

The question in my mind is twofold:
1) will LGA1156 AND P67/H67 support Ivy Bridge on most mobos, and
2) will Ivy bridge bring hex core to LGA1156, or only LGA2011?
 
dougri said:
The question in my mind is twofold:
1) will LGA1156 AND P67/H67 support Ivy Bridge on most mobos, and
2) will Ivy bridge bring hex core to LGA1156, or only LGA2011?
Click to expand...


You mean 1155 I presume? And no one knows if it will support Ivy Bridge, but I would think it is likely considering they are due out in only 12 months. I don't think even Intel will obsolete something so quickly.

And IB will have hex-core cpu's.
 
StinkyPinky said:
You mean 1155 I presume? And no one knows if it will support Ivy Bridge, but I would think it is likely considering they are due out in only 12 months. I don't think even Intel will obsolete something so quickly.

And IB will have hex-core cpu's.
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yes, 1155, sorry. Intel had a presentation somewhere that explicitly stated socket compatibility, but that does not mean the mobos will support it. Independently, they've said Ivy Bridge will replace entry dual core desktop cpus with quads and server/enthusiast from 6 to 8 or 12. which leaves 1155 i7's under IB at 6 core??? Would be odd for EVERYTHING on 1155 under IB to be quad core. Of course, stranger things have happened. Also may not make much sense to put 6 22nm cores on 2-channel memory?

edit... yes, IB will have hex core, but on 1155? or just 2011?
 
dougri said:
The question in my mind is twofold:
1) will LGA1156 AND P67/H67 support Ivy Bridge on most mobos, and
2) will Ivy bridge bring hex core to LGA1156, or only LGA2011?
Click to expand...

I would plan that Ivy Bridge will not be supported on P/H67 chipsets although we might get pleasantly surprised.

Sandy Bridge brings Quad Core more mainstream, i.e. all Core i5-xxxx and better are quads. My personal expectation is LGA1155 with Ivy Bridge will give some hexa core options. LGA2011 will have at least 8+ cores.

Ivy Bridge seams to be Late 2H 2011 like Q4 unless AMD manages to apply pressure.
 
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smangular said:
I would plan that Ivy Bridge will not be supported on P/H67 chipsets although we might get presently suppressed.

Sandy Bridge brings Quad Core more mainstream, i.e. all Core i5-xxxx and better are quads. My personal expectation is LGA1155 with Ivy Bridge will give some hexa core options. LGA2011 will have at least 8+ cores.

Ivy Bridge seams to be Late 2H 2011 like Q4 unless AMD manages to apply pressure.
Click to expand...

presently suppressed = pleasantly surprised??? I think IB is slated for Q1 2012 (CES) last I heard.
 
Th3Loonatic said:
I'm from Malaysia, and as of 14 December, the Sandy Bridge chips along with their mother boards are available on sale already. Prices match the RRPs listed.
Click to expand...
My P67-UD4 should be here Friday. Not that I can get a chip yet, but I'm hopeful to get one before NYE (yearly house LAN with some friends)
dougri said:
The question in my mind is twofold:
1) will LGA1156 AND P67/H67 support Ivy Bridge on most mobos, and
2) will Ivy bridge bring hex core to LGA1156, or only LGA2011?
Click to expand...
1) 90%+ yes
2) Ivy should bring hex (but octo is unlikely) to s1155.
 
Why wouldn't Ivy work in most P67 mobos? Westmere's worked in most X58 boards.

As for hex and octo, didn't Intel state once that it determined that anything over quad cores required more than dual channel memory to keep the cores fed? Maybe that does not apply to SB/IB, but it has held true up until now.
 
Edrick said:
As for hex and octo, didn't Intel state once that it determined that anything over quad cores required more than dual channel memory to keep the cores fed? Maybe that does not apply to SB/IB, but it has held true up until now.
Click to expand...

It's probably fine at the consumer level because the apps have less threads and/or the memory speeds are faster than on servers. If you had enough DIMMs per channel on Nehalem/Westmere server parts, the speed went down from DDR3-1333 to DDR3-1066, and I think even DDR3-800.

AVX optimized apps could change that, but for the most part it should be fine.
 
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