Haswell-E Core i7-5820K Will Only Have 28 PCI-Express Lanes
Leaked Gigabyte X99 motherboard manuals appear to confirm that the Core i7-5820K will only be able to address 28 PCI-Express lanes, in contrast to the 40 lanes of its superior counterparts.
As it turns out, and as we already suspected, not all of the Haswell-E CPUs will have the same number of PCI-Express lanes. Both the Core i7-5960X and the Core i7-5930K will be able to address 40 PCI-Express lanes, but the cheapest Core i7-5820K will only have access to 28 lanes. TechPowerUp forum member "623" has seemingly confirmed this through leaked manuals of Gigabyte's X99 motherboards.
CPU | Cores/Threads | Frequency | L3 Cache | PCI-Express Lanes | TDP | Expected Price |
|---|---|---|---|---|---|---|
i7-5820K | 6 / 12 | 3.3 GHz | 12 MB | 28 | 140 W | $400 |
i7-5930K | 6 / 12 | 3.5 GHz | 15 MB | 40 | 140 W | $600 |
i7-5960X | 8 / 16 | 3.0 GHz | 20 MB | 40 | 140 W | $1000+ |
Of course, this shouldn't come as too much of a surprise. Being able to grab a 6-core Haswell-E processor for the rumored price of $400 makes for a good deal, and there must be a concession made somewhere. While the Core i7-5960X and the Core i7-5930K will be able to address triple-GPU configurations with 16-16-8 lanes, the Core i7-5820K will only manage a 16-8-4 configuration, at best. This leaves the third GPU quite choked, and if you have any additional PCI-Express devices operating over lanes that are wired directly to the CPU, you will run into even more issues. We would have hoped that the i7-5820K would be able to address the slots in an 8-8-8 configuration; however, the manuals posted make no mention of such a configuration. Dual-GPU configurations won't present a problem, but for anything more than that you're going to want a Core i7-5930K or above.
Of course, you can't really ding Intel for doing this. The company will be offering a 6-core chip for hopefully under $400, and if you're interested in a multi-GPU setup that needs the extra PCI-Express lanes, you can probably afford the extra $200 for the upgrade to the Core i7-5930K anyway. Thus, if you're already playing around with the thought of acquiring a Haswell-E system with three or more GPUs, you'd better start adjusting your wishes or your budget.
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No, cause you just spent all your money on a triple GPU setup ^^
No, cause you just spent all your money on a triple GPU setup ^^
All the other sources I read say that it has 15MB L3
And should games start being ported with greater CPU requirements from consoles threading, having 6 actual cores with 12 threads available should really help. I'm just not sure I'm sold on the DDR4... great speeds and bandwidth, but horrible timings. Might be able to be overclocked though... maybe... Will this CPU support quad channel memory like the 4930?
They are just splitting hair in four here....
This is already absurdly expensive hardware, considering how well the mainstream stuff performs. If you want to get the most for your money, you aren't looking at triple GPU setups anyway.
This is already absurdly expensive hardware, considering how well the mainstream stuff performs. If you want to get the most for your money, you aren't looking at triple GPU setups anyway.
It's not about mutli GPU setups, some might need to install some other PCIe cards and when that is installed, does your PCIe lanes for your GPU still get reduced down to say from x16 to x8?
And we ended up with a stupid 28 lanes , not even 32 lanes to give you full 16x,16x
Whos the idiot working at intel who suggested this 28 lanes crap?
And finally , I was expecting the new chip to start from 8 cores and end at 12 cores . The xeons already have 15 cores .
So the entry level 8 and 10 cores , and the x 12 cores . With the price tag of , $400,600,1000.
shame on you AMD for letting intel steal our money for nothing new . We had 6 cores with 40 lanes for yeaaaaaaars , this new generation just offered ddr4 thats it .
The reason should been , six cores are years old now and we should price the 8 cores 600$ and the X be 12 cores for 1000$. Intel are greedy.
And we ended up with a stupid 28 lanes , not even 32 lanes to give you full 16x,16x
Whos the idiot working at intel who suggested this 28 lanes crap?
And finally , I was expecting the new chip to start from 8 cores and end at 12 cores . The xeons already have 15 cores .
So the entry level 8 and 10 cores , and the x 12 cores . With the price tag of , $400,600,1000.
shame on you AMD for letting intel steal our money for nothing new . We had 6 cores with 40 lanes for yeaaaaaaars , this new generation just offered ddr4 thats it .
fuckin hit the nail on the head. Intel was always greedy. I think we all knew this but they have solidified there lead for so many years, now they can chill and take our money.
I am on sandy bridge-e. Was thinking of going with haswell but it looks like I am holding off for more.
The reason should been , six cores are years old now and we should price the 8 cores 600$ and the X be 12 cores for 1000$. Intel are greedy.
I second this. Pricing the same, 6/12 8/16 12/24(or 10/20) cores instead of the way it is now.
Conservative stock clocks may indicate loads of overclocking headroom, to be optimistic about it. The Devil's Canyon i7-4790K comes stock at a relatively impressive 4 GHz, but that's basically a factory overclock.
You would want the fastest cpu you can get stock then over clock it to ensure there would be no cpu bottlenecking. I think the 5930k will be the sweet spot as it was for Sandy-E with the 3930k I have now.
Depending on how good this 5960x overclocks with those 8 cores, I may be tempted to go all out, But usually the more cores you add the less overclocks you are going to get.
Would love to hit at least 4ghz oc on that 5960x would be worth an upgrade along with the M.2 port for 1gb/s ssd's. ddr 4 needs to improve on the timings a little though, speed is already fast enough just needs to bring the cas latency down a bit more before I really get interested.