For the stuff i use, Haswell is 30% faster on the same clock than Ivy that i currently have. If Skylake improve by 10% over Hw, than it's nice upgrade for me. I'll definitely upgrade.
We'll be lucky to see Skylake desktop chips this year, looking at how terrible the 14nm process seems thus far.
Remember we still haven't seen intel demonstrate a quad core 14nm chip at all yet - there are clearly issues with the process still.
IIRC, 14nm MPU logic won't be shipping in high volume till sometime in 2Q15 (calendar). I'm really starting to wonder if Skylake needed a respin after Intel got done tweaking the 14nm process to reach high yields.
Which apps are giving you 30% improvement over Ivy?
If intels last 3 chips have been any indication of how this new CPU will perform, I will yet again pass. There is no reason to buy anything other than a sandy bridge right now, intel hasnt increased performance since that chip was released.
LoL! That's what I'd like to know. Last I checked a Haswell with similar clock speeds was minimally faster than Ivy. LoL!
On topic: I will most likely upgrade to Skylake from my 3770K. I know that I still have a couple of years left in it so I'll keep her around and do a refresh for a home based server. I was really tossing around the idea of either the 4790K or the 5860 but just not sure yet. I'd really like to see where DDR4 is sitting price wise come 4th qtr.
I need to upgrade my whole rig. I would have done so already but the promise of Skylake this year has me holding off.
Things I'm looking forward to upgrade:
i7 920 to Skylake
6GB DDR3 to 16GB DDR4
HDD to SSD
Vista to Win10
Which apps are giving you 30% improvement over Ivy?
Depending on the price of ddr4, yes.
If you compare stock to stock, 2600k vs 4790k, there would be probably 30% difference. Haswell i3s are also quite a bit faster than SB. But yea, if you overclock SB is probably within 10% or so for i5 or i7.
AT is an enthusiast forum where many overclock. i5 2500K/2600K hit 4.5-4.7Ghz. 4790K overclocks similarly. The problem is unless you are rendering, encoding/decoding video, etc. the extra IPC doesn't translate into improved gaming or office performance for example. If you actually use programs that benefit greatly from multi-threading, I would wager that a 4.3-4.4Ghz 5820K would be better than an overclocked 4-core Skylake-S.
On paper a ~15% increase in IPC in Haswell over Sandy and let's assume another 15% for Skylake should mean a decent upgrade from an overclocked i5 2500K/2600K but games just don't show this direct relationship. I bet those gamers who jump to 4K will be 99% GPU limited and would be better off getting dual 390Xs/GM200s instead.
If I had a 920, I'd be looking at one of those X5650s to hold me over. The SSD and OS upgrades would be worth it though.
Which apps are giving you 30% improvement over Ivy?
The 4790K overclocks quite a bit lower, on average (5117 MHz vs 4665 MHz). Take a look at average air numbers on HW Bot between Sandy Bridge, Ivy Bridge, and Haswell, both Devil's Canyon and the original. The downward trend is pretty clear, and Devil's Canyon doesn't quite make up for the losses, and in fact clocks slightly lower than Ivy Bridge did.AT is an enthusiast forum where many overclock. i5 2500K/2600K hit 4.5-4.7Ghz. 4790K overclocks similarly.
I'm wondering if Intel's wide variety of devices on 14 nm may be the cause -- they'd be earning back their investment on 14 nm with quite some speed, given that they'll have SoFIA LTE 2, discrete modems, Broxton, Chery Trail, as well as designs Altera, Panasonic, and a few others.That's an interesting find, what is surprising is that they had Skylake for only 2 quarters, seems quite a bit short to me. I would expect Skylake to be on the market for at least a year before Cannonlake would succeed it.
That's an interesting find, what is surprising is that they had Skylake for only 2 quarters, seems quite a bit short to me. I would expect Skylake to be on the market for at least a year before Cannonlake would succeed it.