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Posted · Original PosterOP

I have a question and wanted to get the forum's opinion. I currently have an 8086k in my work machine and I'm pretty satisfied with 12 threads at 5.2 gigs and 1.31 volts. However, I was browsing eBay and I've noticed the price of the 8086k on the second hand market has gone up from when I bought it. I'm seeing used 8086Ks selling for more than I can go get a brand new 9700k from my local micro center. Now it might seem like a no-brainer, but there are some things to consider: 

 

-My workloads don't really care about cores or threads, just need a fast processor

-8086 is already delidded and liquid metaled

-I'm using an ITX board with probably not the strongest VRM, so I have concerns about overclocking an 8-core on it

-My cooler is a Hyper 212 black and it keeps the 8086 below 80C under load without a problem, but I have concerns that it will not perform as well with 2 more cores to cool

-I'm fairly certain I will not be able to hit 5.2 GHz on a 9700k with the motherboard and cooler I have, so would I be losing performance if I get the 9700k and get stuck under 5 GHz ?

-I know that the 8086k and 9700k have very similar performance from stock, and that on paper the 8-core should have a slight advantage, but theoretically the 86k should hit higher frequency for the same voltage because its highly binned so does that close the gap?

 

I'm kind of feeling like unless I get a really incredible 9700k, I can't really be sure that I won't be losing any performance by going with the 8-core. Now obviously if I wanted to rebuild my entire system around the 9700k, I would do that. That's not what I wanted to do. I am happy with it how it is, not changing any other parts. I just saw an opportunity to make a small profit on eBay and I'm trying to find out if its worth it. Let me know what you think

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If your workload is depended on speed, stick with the 8086k


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Not worth the effort to change for the minimal profit, which might be lost since you already delidded it anyway


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i7 9700k had only 8 threads if i remember correctly. Yes it has 8 cores but no hyperthreading. I mean you are better of whit that i7 8700k 6c 12 threads


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38 minutes ago, insert_comical_name_here said:

I'm using an ITX board with probably not the strongest VRM, so I have concerns about overclocking an 8-core on it

Not like hyperthreading doesn't consume more power, so your consumption would more or less be the same.


I WILL find your ITX build thread, and I WILL recommend the SIlverstone Sugo SG13B

 

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Posted · Original PosterOP
On 3/30/2020 at 12:32 AM, Fasauceome said:

Not like hyperthreading doesn't consume more power, so your consumption would more or less be the same.

True the total power draw might be about the same, but the voltage requirements will be different between the two. The VRM on my board is only 6 phase so that's why I was concerned. I'm honestly amazed this board can hold the 86k stable at 52x, so I'll probably just stick with the 86. But I am curious to find out what frequency other people have been able to get with their 8086k.

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4 hours ago, insert_comical_name_here said:

True the total power draw might be about the same, but the voltage requirements will be different between the two. The VRM on my board is only 6 phase so that's why I was concerned. I'm honestly amazed this board can hold the 86k stable at 52x, so I'll probably just stick with the 86. But I am curious to find out what frequency other people have been able to get with their 8086k.

I run a 8700K (6 core 12 thread) @5GHz using a 60$ cooling solution and basic thermal paste (not like the factory one or noname but also not the fancy ones ) and I think I have a bad OC lottery chip (since people I know manage to run this chip above 5GHZ at lower temps than mine) 

 

I would ditch 8086k (was a waste of money even when it was new) and get me a 8700K if you can sell it at the prices you mentioned I doubt the price is going to get much higher before it starts to fall down (due time) 

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4 hours ago, insert_comical_name_here said:

True the total power draw might be about the same, but the voltage requirements will be different between the two. The VRM on my board is only 6 phase so that's why I was concerned. I'm honestly amazed this board can hold the 86k stable at 52x, so I'll probably just stick with the 86. But I am curious to find out what frequency other people have been able to get with their 8086k.

5.2ghz is a pretty standard deal. Give or take the stability at 5.3-5.4ghz. Great chips for cool weather people. 

Benchmark this 8700K at 5.4-5.5ghz HT off for 3D legacy with an 8c water Delta. De-lidded made a considerable difference in temps even on ambient cooling.

For info on what other's do with their 8086K processors, just check out the database. https://hwbot.org/hardware/processor/core_i7_8086k/

Lastly, I also vote keep the 8086K. It's a great processor, not a single reason to ditch it yet. Unless you just want to and need the single digit % IPC gains.

 

Quote

I would ditch 8086k (was a waste of money even when it was new) and get me a 8700K if you can sell it at the prices you mentioned I doubt the price is going to get much higher before it starts to fall down (due time) 

The 8086K is a 5ghz boxed cpu and the 8700k is 4.7ghz boxed cpu. There is absolutely no reason to purchase a slower cpu. They OC roughly the same, but I'd believe the 8086K to have the binned advantage over the 8700K. 

 


 

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The 8086k, 8700k, and 9700k are all very similar CPUs. 

 

8086k and 8700k are identical besides binning which is basically irrelevant. No sense in upgrading one to the other. 

 

Effectively: 

When using 6 cores/6threads or less: Everything is nearly the same! 

 

When using programs that can use  7 cores/7threads up to 11 cores/11 threads: A performance advantage to the 9700k that decreases as the thread count goes up. 

 

12 cores/threads+: Basically identical, a super small advantage to 6 cores with hyperthreading. 

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Posted · Original PosterOP
3 hours ago, papajo said:

I run a 8700K (6 core 12 thread) @5GHz using a 60$ cooling solution and basic thermal paste (not like the factory one or noname but also not the fancy ones ) and I think I have a bad OC lottery chip (since people I know manage to run this chip above 5GHZ at lower temps than mine) 

 

I would ditch 8086k (was a waste of money even when it was new) and get me a 8700K if you can sell it at the prices you mentioned I doubt the price is going to get much higher before it starts to fall down (due time) 

 

I wouldn't trade the 86k for an 8700k, I doubt it would be as fast. And I think you got a decent chip if yours can hit 50 stable.

 

 

1 hour ago, toasty99 said:

The 8086k, 8700k, and 9700k are all very similar CPUs. 

 

8086k and 8700k are identical besides binning which is basically irrelevant. No sense in upgrading one to the other. 

 

Effectively: 

When using 6 cores/6threads or less: Everything is nearly the same! 

 

When using programs that can use  7 cores/7threads up to 11 cores/11 threads: A performance advantage to the 9700k that decreases as the thread count goes up. 

 

12 cores/threads+: Basically identical, a super small advantage to 6 cores with hyperthreading. 

 

I agree about the chips being similar but I do think binning is relevant here. I need the fastest possible (or close enough) CPU speeds for my work so having a better binned chip means I can hit a higher clock, which is useful.

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1 hour ago, insert_comical_name_here said:

 

I wouldn't trade the 86k for an 8700k, I doubt it would be as fast. And I think you got a decent chip if yours can hit 50 stable.

 

 

 

I agree about the chips being similar but I do think binning is relevant here. I need the fastest possible (or close enough) CPU speeds for my work so having a better binned chip means I can hit a higher clock, which is useful.

then stick with what you got.

 

5.2ghz is not really that common for 9th gens either.


My System: i7-8700k 5.0ghz All-core delidded @1.365v // Cryorig H7 Quad Lumi // Gigabyte Aorus Z370 Gaming 5 // 32GB (4x8) Corsair Vengeance DDR4 3466 OC // XFX Radeon RX 5700 XT RAW II // NZXT S340 White // Seasonic Focus Plus Gold 850w // Intel 660P 1TB NVME M.2 SSD/1TB Samsung 860 EVO/1TB 2.5" HGST HDD // Displays: ASUS VG248QE/Acer K242HYL/Acer K242HYL // Corsair K68 Mechanical Keyboard - Logitech G502 // Corsair H70 Gaming Headset

 

Wife's System: i7-8700 // Arctic Freezer 33 // Gigabyte Z390M Gaming // 16GB (2x8) Corsair Vengeance LPX DDR4 3200 // Sapphire Vega 64 // Thermaltake Versa H17 // Seasonic Focus Plus Gold 850w // 1TB Samsung 860 EVO/500GB Silicon Power A55/4TB Western Digital HDD // Displays: ASUS VG245H/ASUS VP248Q // Corsair K68 Mechanical Keyboard // Logitech G602 // LG BDRW // NexStar 5.25" USB 3 Enclosure

 

TV Gamer: Ryzen 5 1600 3.9ghz All-core @1.39v // Wraith PRISM // Gigabyte B450 Aorus M // 16GB (2x8) Corsair Vengeance LPX DDR4 3200 // XFX Radeon RX 580 8GB XXX Edition // Thermaltake Versa H17 // Corsair Vengeance Silver 650W // 120GB Sandisk SSD/120GB PNY CS900/4TB Western Digital Blue // Display: 50" Westinghouse 1080p // Rii Wireless Mini Keyboard w/Touchpad/Xbox One Controllers

 

Son's System: i5-9400 // Cryorig H7 Quad Lumi // ASRock Z370 Extreme 4 // 16GB GeIL Potenza DDR 3200 // ASUS RX 570 4GB OC // NZXT S340 Black // Seasonic S12II 620w Bronze // 525GB Crucial MX300/500GB Wester Digital Blue // Display: Dell P2417H - Eagletech KG010 Mechanical Keyboard // Logitech G203

 

Daughter's System: i3-8350k // Cooler Master i71c // MSI H310M Pro VDH-Plus // 16GB T-Force Vulkan 2666 (2400) // Zotac GTX 1060 3GB Mini // DarkFlash Micro ATX White // Corsair CX550 // 480GB PNY CS1311 SSD // Display: Scepter 20" 1080p - Logitech Keyboard and Mouse

 

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2 hours ago, insert_comical_name_here said:

,I wouldn't trade the 86k for an 8700k, I doubt it would be as fast. And I think you got a decent chip if yours can hit 50 stable.

Its the exactly same chip (86k vs 8700k) intel just wanted to squeeze out more money by increasing the base clocks slightly and hitting on the nostalgia nerves... and 5GHZ is something most of the 8700k could do easily(many just by click a button on their mobo for auto OC) and that's an other reason 86k was a waste of money...

 

Intel was like the suspicious looking guy in a shadowy corner who is like psss dude do you want some nostalgia?  

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Posted · Original PosterOP
18 hours ago, papajo said:

Its the exactly same chip (86k vs 8700k) intel just wanted to squeeze out more money by increasing the base clocks slightly and hitting on the nostalgia nerves... and 5GHZ is something most of the 8700k could do easily(many just by click a button on their mobo for auto OC) and that's an other reason 86k was a waste of money...

 

Intel was like the suspicious looking guy in a shadowy corner who is like psss dude do you want some nostalgia?  

86k is a waste if you pay full price for it. If you get it for less than the price of an 8700k like I did, its a deal

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