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This is bad for multi GPUs - Intel Core i7-5820K Features Fewer PCI-Express Lanes After All

ubersonic said:
16x/16x/8x and 16x/8x/4x at PCI-E 3.0 should still be fine for tri-fire/SLI no? I can't see any cards exceeding PCI-E 3.0 8x bandwidth any time soon /shrug.

After all it is the equivelent of PCI-E 2.0 32x/32x/16x and 32x/16x/8x.
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You must have seen some reviews where they tried running a pair of 295X2 cards in crossfire and ended up with poor performance.

I think part of the reason for this is where the PCI-E slots did not have the bandwidth to cope with the massive output of these cards and worse still they no longer use crossfire bridges meaning even more work for the PCI-E lanes.

The next gen of cards are going to be faster than the 295X2s.......
 
FrankJH said:
there shouldnt be anything "only" about Haswell - E , which is a premium option already.

Make the cache the differentiator, not something crucial like PCIE lanes

After all this whole processor line is only appealing to a tiny percentage of users in the first place - high performance /extreme users - its a bit of a con to do this kind of thing imo
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PCIe lanes are only crucial to someone who wants to run massive multi GPU configurations.

They mean VERY little to someone who uses the CPU for rendering or other usage scenarios which do not require massive PCIe lane availability.

The point is, the other 2 options offer 40 lanes, the lesser of the Haswell-E line up has 28. It's not that big of a deal. If you are part of the HUGELY TINY FRACTION of people who use Multi-GPU configurations then you have to put your hand in your pockets and pay up if you want huge PCIe lane availability.

For the other 99% of people 28 lanes versus 40 is a total non-issue.
 
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Max number of PCI Express Lanes = 40

Have intel gone into partnership with NVidia

Selling you less for more and saying it's cool.

If intel can sell the 4820k in the above configuration there is no reason whatsoever why they can not extend this to it's successor.

Isn't technology supposed to go forward not backwards.
 
if it anywhere close to 4790k money, has to be tempting to grab it and the cheapest x99 board you can find for 6c 12t ddr4 yummyyums

thats not a bad thing right? :)
 
Kaapstad said:
If intel can sell the 4820k in the above configuration there is no reason whatsoever why they can not extend this to it's successor.

Isn't technology supposed to go forward not backwards.
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The 5820 is a hexcore, they needed to cripple it in some way or they'd be eating into their own higher end sales.

It may not be right, but that's how it is.

You're focusing too much on the lanes rather than the CPU as a whole. It's Intel's first move into a ~300 pound hexcore overclocking chip.
 
I agree with Kaap - these procs are supposed to be for the extreme enthusiast. You wouldn't expect PCI-E lanes to be nerfed, even on the 'basic' proc. It's still going to be £300+ for that one!

All this does is moves the goalposts for those already considering dropping £1k+ for the upgrade to X99
 
This what happens with lack of competition. AMD needs to step up. :(

I was planning on building a Hackintosh workstation and slapping in a bunch of GPU's for rendering, and compute. Now I'll be forced to spend even more on a CPU just to not have them handicapped.

EDIT: I wonder if their Xeon line will also have similar handicaps, if not I'll just slap on of those into the motherboard if supported.
 
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For those of you that have gone into a meltdown over the 28 lanes on the 5820k, wont lane extenders on a WS board for example be used as a workaround ?
 
All Intel have done is introduced a cheaper entry point into their hex core CPU's and they're getting hammer for it? lol.

The 5820K is an entirely new SKU for people who want to get the fastest 6 core CPU available but don't need or want 16x/16x Crossfire/SLI, not everybody has multiple GPU's and 4K monitors, not everybody wants the fastest processor available just to run games - they have many other non-gaming uses believe it or not.

Those who do need the lanes for 4K gaming etc will do what they have always done and buy the 5930K which has not changed from the 3930K/4930K series' (or more than likely Extreme Edition's given their obvious wealth).
 
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I havnt seen decent pcie lanes since x58 days,no fancy plx chips either

Seems less is more now a days and charge a premium for it
 
N19h7m4r3 said:
If AMD or something else (VIA), could compete at the High end this wouldn't be happening. :(
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This sadly since Core 2 was released AMD have not had something competitive. I glad they are drop there current tech and going onto something fresh for 2016.

Hopefully it will be a massive turnabout like with Intel going from the P4 days to Core 2
 
Disappointing to see this kind of artificial crippling, but it's not really any different from the previous generation where the entry-level X79 processor had 4 cores instead of 6.

This time you get the same number of cores as the higher versions but neutered PCI-E lanes.

The entry-level 'workstation' have always been roughly equivalent to the 'gaming' i7 (eg. 3770k/4770k/4790k).
 
KillBoY_UK said:
This sadly since Core 2 was released AMD have not had something competitive. I glad they are drop there current tech and going onto something fresh for 2016.

Hopefully it will be a massive turnabout like with Intel going from the P4 days to Core 2
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Would be excellent, but i doubt it would happen :(
 
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