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Honest Opinions please - Would I be throwing good money away (5930K->6850K+considerably faster memory vs newer platform)

Soldato
Joined
26 Apr 2004
Posts
9,486
Location
Milton Keynes
Hi Guys
Bit of a wierd one here, but asking honest opinions. I love tinkering, I love optimising within reason a platform to get the most I can out of it so I know I'm not leaving chips in the sand so to speak. Now my backup desktop machine at the moment is the bottom one in my signature. (5930K/16GB 2400MHz/3070)
The backup machine also doubles as the Bedroom HTPC/Gamer for me and the wife to play on, especially if we want to play a PC title not Xbox/Switch, so I do like to keep it moderately up to date. The TV its connected to is 4K, but also supports 1080p120.

Recently I managed to grab an RTX 3070 FE new, at RRP, so went for it, given how crazy the last few years have been, the fact that if anything RRP will likely go up again next generation, and the fact that frankly the 3070 will remain usable for a number of years (plus the wife agreed, which can sometimes be difficult, so that alone basically made it a done deal).
It also handily steps on the 2080 I have in my laptop, even with that one being Max P, whilst running considerably quieter.

The 3070 is lovely, a substantial upgrade over the 1080 that used to be in there, but the downside is it is showing clearly the limitations of the x99/Haswell-E platform, which frankly is still fairly impressive for 2014/5 kit. Some stuff runs literally twice as fast or more (and I suspect even that might be being capped a bit), compared to the 1080 that used to be in there, whilst other stuff has barely changed due to the CPU/Memory bottlenecks. In line with this, and going back to what I said previously about optimising a platform, I had a look around and note that 6850Ks really seem to have come down in price in the last year or so, I can now pick one up for around £60-70, maybe less. They were double that when I picked up the 5930K.

On top of the price changes, my 5930K is not a great clocker; its running 4.3GHz so not disastrous, but I can't really get it any higher than that, even with a 240MM AIO, it simply gets too hot and unstable so I hit the point of it not being worth throwing more at for example a better cooler; I don't have a golden sample at all, rather a much more average one; and it also doesn't seem to like anything much faster than about 2400MHz DDR4. Perhaps not a surprise as it was first gen DDR4 IMC.

SO, given I don't have a particularly spectacular 5930K, my thought was to grab a 6850K for around £60 (as opposed to a cheaper 6800K as I understand those tend to be a lot more variable on silicon quality and they're not that much cheaper on eBay etc), and try to get hold of 32GB of 3000-3200 MHz RAM (4x8 to run quad channel) at a reasonable price, sub £100. I understand the 6850Ks are also not known to be spectacular clockers either, especially as they were first 14nm, but a lot of them will still hit 4.2-4.4GHz with a 240mm AIO, and as time and production weeks went by, 14nm improved so that some examples actually will do 4.5-4.6 or higher if I got lucky. They also as a whole typically had much better DDR4 IMCs that open the door to move to 3000-3200MT DDR4 without any major headaches.

The thought though being that the 5-10% IPC bump of Broadwell means I only really need to hit 4.1GHz to match the 4.3 of my 5930K, and if I got 4.2GHz or higher, I have immediately got a bottleneck alleviating performance bump there, whilst the better Broadwell IMC will allow me to RAM bump to 3000+ from 2400, which will double up on the improvements and definately help raise the bottleneck there, especially for modern titles, and said 3000MHz+ DDR4 RAM kit would be considerably more useful to me if I was to change the platform to something more modern later. The machine would basically then 'live' as is, with me happy I'd got more or less the best out of it until I did an entire system refresh. I'd then look to sell on the 5930K and old RAM to net a bit of the investment back.

Looking at some relatively recent Youtube benches and videos to consider options, it looks like a decently overclocked 68**K will still hold its own or even win in games in a fight against Zen 1/2, which still cost more second hand, and would necessitate a platform change. Something like an 8700K would take away the variability of relying on the overclock and clock higher, but again also necessitate a platform change, and the 8700ks themselves are still going for considerably more, £150+. Realistically beyond clock speed/RAM support, Intel didn't really boost IPC much after Broadwell until 12th gen arrived, it was all power/clock/RAM speed bumps so as long as I'm comfortably over 4Ghz, 6c, I'm not giving much away staying with Broadwell, maybe PCI-E 4.0, but that's no big deal, and I do already have NVME Gen 3x4 support for up to 2 drives, so a newer platform won't benefit me there either.

Between RAM, and hoping for a reasonable OC on 6850K, I'm hoping I'd basically uplift overall performance, especially on the mimimum end by a good 10-20%, which'd allow the 3070 to do it's thing without the CPU/Mem getting in the way as much, but it would be throwing maybe £100-£150 at bringing an old platform up to essentially it's gaming peak; but I'm not sure there is anything else really worth doing at a similar price level, not without splurging considerably more on a newer platform, which would require the RAM change anyway, and then have additional headaches with for example AIO fittings etc.

This all being said, the above is the plan. My budget is very limited, as the wife will balk if I throw too much money around, especially after the 3070, but it does mean I don't have to deal with any worries about new motherboards, cooler not fitting etc, its a fairly easy inplace swap out, that should allow the 3070 to perform to it's potential a bit more.

The question is, is it really worth it, or more accurately, is there anything more worthwhile to spend on? Is my desire to get the best out of what I already have, or to go with a simple upgrade path, blinding me to a better option?
 
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I think 5-10% IPC going from haswell to broadwell is optimistic, those BWE is not known to be good clockers either generally the HWE would reach higher speeds.

With a 3070 I would be looking to change the entire platform, some of this old HEDT stuff fetches good money for some reason.

IPC didn’t increase much but boost clocks did, which is what you’re missing.

I would look into which games it’s struggling with as well as 1080@120 is not some lofty Goal so would think the cpu would manage it.
 
Tinkering sure is fun. With DDR4 being much more affordable at the moment it might be worth looking into something like a 3600 with a B450 motherboard. You'd get a larger performance gain with the option to drop in a 5600 further down the line for a significant boost again. This would bring the cost up to more like £200 however, which would be harder to justify (my last large upgrade 18 months ago left my wife...unhappy, shall we say, so I understand the predicament!).
 
It's true, in an ideal world, I'd just go for something like a 5600 and a B550, it'd be more efficient too so the PSU I've got would be more comfortable; but I can't really justify the cost, especially to she who must be obeyed.

I realise the 5-10% IPC gain HWE-BWE is maybe optimistic, but the reasonable price for a 6850K, the fact it'd allow me to run much faster RAM, and the fact my HWE isn't a great clocker, even with a 240MM AIO (it gets very, very hot, even at 1.225V), means I could potentially throw that 6850K in, aim for ANYTHING over 4.1GHz and 32GB of 3000-3200MHz memory in for an all round performance bump, which'd then benefit me again by giving me the RAM I'd need to more easily swap the platform in say a years time without raising SHE-WHO-MUST-BE-OBEYED's ire.
 
Not sure if you know. But you can run duel channel perfectly fine and you may also get a higher clock. You can also run 3200mhz ram with the CPU you have.
 
Yeah completely aware dual channel is also fine, just nice to have bandwidth for anything that likes it; honestly though the IMC on the 5930K I have really just doesn't like much above 2400MHz, regardless of what I do. It was a fairly known thing many of them were limited to somewhere 2400-2666MHz, and didn't like going much higher, as a downside of being Intel's first go at DDR4, the IMCs were notoriously restrictive and awkward. Between the IMC, and the fact it just goes super hot even with an AIO on moderate voltage leaves me feeling like the machine is about as far as it'll go without swapping the processor (or platform). It's not worth throwing a more expensive cooler at on the chance the little extra headroom might allow me to push voltages and therefore clocks higher.

The BWE likely won't clock that well either (one reason to go 6850K v 6800K, by all accounts the 6850Ks were better binned, the 6800Ks were wildly more inconsistent with voltage requirements and the price gap isnt particularly high at £20), but at least there'd be a fresh chance of 4.2GHz+ and the better IMC.
All the benches and reviews from the time I can see seem to say BWE performs about 5-10% better at the same clocks as HWE when CPU constrained, they just couldn't clock as high as the best HWEs which made them a bit a damp squib at the release prices as an upgrade path, they weren't worth it for the money. The current pricing, fact I already have the platform, and the fact my 5930k isn't amazing/won't hit 4.4-4.7 like some, somewhat changes the equation. If my 5930K had hit 4.4-4.5GHz, I'd not even be considering this, as it really wouldnt be worth it.

Looking at benches, at 1080p with a decent processor, 2400MT->3000/3200MT RAM seems to typically net around 10% performance bump, so assuming I got a 6850K that would do 4.1GHz or more, I'd basically be gaining 10% there straight away, something I can't do with the current 5930K due to that memory controller, and I'd be looking at that same memory upgrade outlay ANYWAY on any other platform; just the 5930K I have won't allow me to really make use of it now, the 6850K should. If I got a 6850K that'd do 4.4-4.5GHz without burning up, it'd be a very measurable performance upgrade between the clocks and IPC, and the memory, or that's the theory.

Ideally, I'd spend more and revamp the entire platform, but my budget is really constrained; once I start adding motherboard etc, it starts becoming very difficult, would take more time and I know she who must not be named will just not bite for now, and I'm not seeing a clear way to do more with roughly the same money, especially as X99 is still very capable for the age. The RAM upgrade price is the same, I can't see anything more likely to offer me a performance boost for the price of the 6850K at ~£60, as the RAM is going to be the same cost/requirement either way; no way DDR5 is becoming affordable anytime soon.

There are faster options, but they seem to cost considerably more, and doing this now would get me a bump now, from RAM only if nothing else, and make a future platform bump more palatable.

Am I looking at this all wrong?
 
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6900K I could kinda understand, it'd be more cores, potentially better binned, have better resale as a bundle later, plus the IPC+IMC improvements, downside is the additional cores generate more heat which could be a further clocking restriction, and the pricing on those chips is still £150+ so it is really out of the window here.

The 5960X is much more affordable at a similar price to the 6850K, BUT I'd be 100% relying on getting a better clocker with that as there'd be no IPC gain, and I don't need the extra cores it offers over the 5930K, going 6 to 8 core isn't really going to benefit any games right now, so although that is much cheaper, it doesn't really benefit me.

I really need more IPC, more clocks, or both. Unless I could get a pre-binned 5960X that I had a guarantee it'd run faster, there's not much point going that route.

At least if I spend money on a 68**/69** chip, I'm getting a newer generation, more modern CPU which'll hold some value for longer.
 
I've never had one that doesn't do 4.4ghz and I've had every cpu mentioned in this thread. I think you just got unlucky with it. From a 5930k to a 5960x I didn't notice much temp difference. But I was on custom loop. The limiting factor was that the CPU just refused to do 4.6

Had a look on eBay completed listing and the 6900k can be had much cheaper if you keep watching.
 
Yeah, a custom loop would probably work around the heat issues any of these chips could throw your way, combined with better binning. I'm working with a 240MM AIO so a bit more limited, especially as the 5930K I'm working with is getting extremely hot under even moderate voltage, like, it'd potentially go further with a decent jump in volts, but the heat its kicking out is too high to make it manageable, it's just not a decent clocker, in that sense it just wasn't a lucky one :)

I'll keep an eye on 6900Ks as well as the 6850s.

I'm in that wierd performance/price position where the performance overclocked is better than most things low end second in price already; and to go to a noticeably better modern platform is unfortunately a fair jump up in price that makes it not really possible for me right now, so looking for that narrow window of improvement at a moderate price!

A 6850K/6900K hitting 4.4GHz+ would be perfect, as I'd get a small clock bump, a small IPC bump AND a IMC bump to virtually guarantee it'll be able to run the faster memory, as realistically clocks/IPC/IMC are worth more to me than more cores!

Also you're right on the 6900K, I see the famous second hand place is £95 now (albeit with only 3 of them in across the business), less than when I looked a week or two ago actually (it was over £100 then), although they're all quite pricey on eBay right now; so its got to the point it's at least worth considering.

Potentially still a bit too pricey though; as once I'm talking ~£100 for that, and £100 for the RAM, I'd potentially be close enough to a second hand bundle using a newer platform, which then heads back into the hard to get past the wife territory haha
 
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Of course; trying to avoid antagonising she who must be obeyed however, so there is a bit of politic involved here, and unfortunately even if I sell afterwards, I will still have spent the money FIRST! haha
 
Of course; trying to avoid antagonising she who must be obeyed however, so there is a bit of politic involved here, and unfortunately even if I sell afterwards, I will still have spent the money FIRST! haha

Glad my Mrs is logical and not a total spanner in this regard, that sort of attitude would drive me up the wall, money for sold parts is a reduction in the cost spent, the only sort of people that couldn't get that is a Daily Fail reader or similar.

Sensible option, tell her that the cost to run that PC will be £50 more per year (electricity costs) than a newer lower power part, that is actually faster in IPC terms, who am I fooling that would never work. :p

6850K sounds like a total waste of money tbh. How about you just sell your board/CPU/RAM first, then use that money plus extra to get a new upgrade, and therefore defeating the money upfront objection. I dunno, logic eh.
 
To be honest she's generally very logical, she's a uni graduate and use to work fairly high up some large companies; and great at saving unlike a lot of wives, perhaps a bit too great at it! She can be just as critical over things she would like to spend on as well, she's just not so fond of tech upgrades as she often sees them as superfluous/unnecessary. I can kinda understand the feeling looking at people tinkering with cars etc, it's made worse by the fact I love playing with tech and she knows that colours my perception at times.

Essentially as long as I can justify it as necessary she will be fine, within reason, but given the fact we have only just picked up the 3070 not long ago she won't want a load of added expenditure right now, which is part of the reason for being more careful here.

I am weighing up the option of selling first, and going that route. Again just trying to keep general expenditure down.

The RAM upgrade is a no brainer, as I'll be able to shift that to a newer platform, as long as I go for 3000/3200. What to do about the CPU is the bigger question, as looking at some of the online tests with heavily tweaked and overclocked older CPUs, sometimes they are surprisingly close or beating newer platforms, just no where near at stock.

6850k is a drop in replacement that would enable the ram to work at full speed for minimal outlay, potentially with performance enhancements.
The alternative is to sell what I have, but potentially have to spend a decent amount more by the time motherboard etc is factored.

Will need to think.
 
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The alternative is to sell what I have, but potentially have to spend a decent amount more by the time motherboard etc is factored.

B-grade B450 motherboard for £40-50, £50 for 16GB DDR4 3200MHz, and you can get an R5 5500 for ~£125, so £225 spend, how much would you get for your X99 gear, I'd say at least £130, but you have an upgrade path, and if you wanted you could try and go for a B550 board.

As for the power usage I was not actually kidding, measure your at the wall power draw on your current system and see what it is pulling under load, with your overclock in place. Then work out how may kWh you'll use per year based on average load. When your electricity price hits 45ppkWh then just under-volting your GPU, and using a chip like the R5 5500 could save you 150-200w total system load, so 5 hours use is 1kWh, and that is about 30p now, and only going one way. So how many 30p-45p's could you save over a year? Well if it is 100 then that is £30-45... Logic isn't always saving money upfront.
 
Yeah, I do actually completely agree on the logic of that. There is a beauty in tinkering and swapping around to getting the most out of an older build, but sometimes it is better to just move on.
I'm sure the X99 core bundle would be very useful to someone after something more mid-low end at the right price, especially as I currently have a GTX1080 I was looking to move on that was previously in the build. Still very capable for 1080/1440p!

Regards the power usage, I actually completely agree, if the system was used more, that'd be of higher priority to me, as it is only on for a few hours every few week and we have solar, its less of a priority, but it's no less true, if the system was on all the time she would be swayed, but we both knew the X99 was not so efficient, just gets the job done.
 
some of this old HEDT stuff fetches good money for some reason.

Skt2011 stuff is still, just about, fairly relevant performance wise, has a wide virtualisation feature set, lots of pci-e lanes, lots of memory bandwidth, etc. and you can get various Xeons fairly cheap now including ones with silly numbers of cores.

For gaming stuff and Xeons though only the E5-16xx series really make much sense as the V2 and V3s are multiplier unlocked, not sure about the V4 - unfortunately I think they aren't. Due to being cherry picked silicon you usually get memory controllers capable of at least 100-200MHz faster than the equivalent desktop chip and loads of headroom to either reduce voltage or increase frequency.
 
I think I'm now going down the rebuild option. Picked up 32gb (4x8 SR) 3200C16 from another forum member. It's Hynix but I have a set of 3200 Ballistix Micron around in my Intel machine I could swap (in an Intel machine where it won't matter) if it didn't play nice.

Got a family acquaintance who was looking for an upgrade an old i5-2400/GT710/HDD build, so they're interested in taking my X99 kit off me bundled with the 1080 I was using before the 3070, couple it with a decent deal on a case, PSU and a cheap SSD and think they'll be blown away by the upgrade. The 5930k at 4.3 all core is still very capable, especially for 1080p/1440p60, just not so much for high refresh rate, and paired with SSD it'll be absolute night and day for desktop use.

If that goes through then works out well for them, they get a bundle way cheaper than getting something equivalent new (plus basically get it built and configured sans manufacturer bloat) and I get funds to go to core components, and maybe a little change left over.

The trick will be just whether to go for the 5500(/5600)/B550 (as I'd prefer to go current generation) or 12400F/B660.

Will have to see what pricing looks should the trade out go ahead.
 
Yes, one reason I'm waiting to see it the x99 sale goes through and current pricing before I make a decision, as I've noticed some boards and CPU prices fluctuating a lot recently. If I went Ryzen I'd also prefer to pay a bit more for warranty vs BGrade too unless the discount is substantial as I've had issues with quirky boards in the past where issues take some time to surface, so I'd be looking around £100 at a B550 anyway.

Also thinking as AM5 approaches might see people clearing out some excess AM4 kit on MM.

Timing on the acquaintance needing an upgrade was a bit too fortunate as well though so wary it might fall through, willing to throw them a discount to get it over the line if need be, as frankly my old kit would be perfect for what they've talked about, given what they're coming from, and thier budget, and would fit my purposes perfectly too.

The ram was a no brainer now though, couldn't knock 32gb 3200 for £80 with lifetime warranty, I can put it to use now (albeit at 2400mhz) and then move it to 'future platform' later. It'll be a while before DDR5 is cheap enough to eliminate DDR4.

Plus, having two sets in use, I've got two opportunities to see if one would do 3600/3733 if I go the Ryzen route.
 
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