Yes is Desktop PC.  Thank you for very helpful and concise suggestions.  Will get artic silver, will watch videos about how to seat/unseat HSF, yada.  Thank you again!  -e   +1

BTW, I hired a local PC shop to assemble the rig I use.  I should have known they would be sloppy since they did not return to me the generic power supply that I had replaced with a gold yada.  They said it was junk (it was brand new - unopened) and tossed it. 

Yes, 90 is bit too much on the high side, the CPU should not be getting that hot when just streaming video IMO. Hard to believe it would be so CPU-intensive. It should have 66-70 degrees during load, not rest/idle at that temp.

Anyway, i think its way more likely cause of your Witcher 3 woes than any RAM issue, i think CPU may get so hot under load in that game, that it throttles to lower speed automatically to cool itself off and that causes the choppiness.

Alternatively it may be some GPU related issue, GTX670 is not exactly the newest GPU, while Witcher is pretty demanding game. But i doubt it has anything with RAM. RAM issues generally manifest in system instability, BSODs and stuff like that.

This wouldn't be a problem for elemental. A 2011 game. That is in 32 bit. But Ya get the temp down I would try these advices before I buy a new cooling system. I would also go back to the computer place, and tell them that they did a bang up job on your custom built pc.

What Wizard1956 said those temperatures will cause BSOD sooner or later, or the system will just shut down to prevent damage.

You should renew Thermal Paste and if you are not compftable doing so yourself, then take it to a local dealer/store and tell them to replace it for you should be around 5 USD.
They usually also blow out dust and have all of the stuff needed. That way you dont have to buy a full ampoule of Artic Silver and spend too much money if you dont have the paste at your disposal.

I just hope that you did not install the stock cpu coller that came with the cpu, cause those are utter crap and should only be used as paperweight.

Let us know about the temps on idle after you changed the thermalpaste.
Also it would be nice to know what program you used to read out the temperatures.

Have a nice weekend 

Used Speecy to determine temps.  Stock cpu collar?  I bet assembly folks used whatever collar came with the sabertooth mobo (see below). Will ask computer folks to use/get/install better one.  What u recommend?  Will report back after long weekend.

Heres specs on mobo:

@admiralww   true, never had any problems running elemental, FE, or a fullly modded, w/ 4x graphics Skyrim / FO4. 

Not entirely true.  The 'stock' cooler is entirely adequate for 'stock' usage.

Only those who feel the need to overclock [and stress] everything they have will actually NEED over-pricey watercooling et al.

It's a bit like having a car that redlines at 5500....and you just MUST see if you can get to 7500 in second....

....or in my case [whilst young and stupid] got 6500 in second up the Lakeland Hillclimb in a Spitfire that redlines at 5750.

It's all good if you can afford the rebuild...;)

Yeah, stock cooler is fine for stock speeds.  I've run a few of them myself, and I'm the guy that hates having his temps hit the 70's when he's running a stress test.  You've got a big problem in there somewhere.  It's more of a "my CPU just died from heat degradation" than a performance problem though.

 I'd be very surprised if the CPU temperatures would cause Witcher 3 to run poorly though.  Your system is GPU limited, a 670 is nowhere near powerful enough to tax that thing all by itself.  You'd need to be playing a threaded, high load game like Ashes of the Singularity to really work it anywhere near stress test levels.  Shooters and RPG's just don't have that kind of CPU utilization.  I'd expect you to BSOD playing FE if your system is so poorly put together.

What is the more likely culprit is the 670's shared memory utilization.  Utilizing that DDR3 1066 is massively slower than the DDR5 in that card.  Once you're above 2GB in video memory requirements, things are going to slow way the fuck down.  This isn't a recommendation to buy faster ram either, it wont help much.  They're entirely different implementations, if you had the hottest DDR4 ram money could buy, it would still run like dogshit next to the dedicated vram.  I'd get one of them nifty new radeon's for a couple hundred bucks and run whatever you want without blowing $700 on a 1080.

While on one side i can agree, on the other side i have to disagree and say that on average you will have no good cooling with a stock fan. (also depends on the circulation in the tower itself, and if you run a good bench station you will have fans around that are way better anyway)
Most people i know will only buy the boxed version for warranty reasons, aswell as making sure that they get an untouched/new CPU rather than a refurbished product. But most of these guys overclock... so yeah.
But i never heard about buying them (Boxed) because of the magnificent cooler that comes with it.

Been known to....only the last 2 or three systems have had aftermarket ones...and the most recent build/CPU didn't come with a 'stock' cooler anyway.

radeon instead of a gtx?  puzzled look... I am totally unfamiliar with non-GTX cards.  I google/binged the Raedon, paaears to be three families, and tons of confusing gobilty gook.  Might you suggest a few of the raedon cards, and state why that partictular card.  This will help me cut through all the 'sale-ese' language to whats important.    really appreciate this.

If radeon then why do all the computer people say nvidia is better at gaming in real world scenarios. Unless the guys at the computer place were willing to fix my computer for free because of the bang up job at customizing I would probably take my computer somewhere else to have it fixed. They recommend having it computer cooled, but since you don't sound hardware savvy I would go with fans. Easier to maintain in the long run. If you were going to give computer specs I think the processor generation is important.

Agree about Nvidia, they seem, in the gaming world, to have overwealming supprt vs. radeon, but I'm open to some solid advice for a card that fits the processing lvels of the rest of my rig.  I will never go back to shop that assembled my system.  Processor generation?  You mean a later/faster i7?

It's true, Nvidia is massively more powerful than AMD at present, no comparison at all.  

However, their DX12 support is lackluster, and you can get an 8GB card for under 300 that performs extremely well for it's price.  The 6 GB GTX 1060 performs better in benchmark software, but anything truly utilizing the parallelism allowed by DX12 going forward is going to be wasted on it's power.  It's also 2GB shy, and that makes a big difference when you get a game that can use that extra ram.  In real world testing of actual video games, they're largely even, and the rx 480 seems to be in the lead typically.

If I wanted to blow $700 on a video card that would be antiquated two years from now, , sure, there's no contest, it's a 1080 GTX or nothing.  If I don't, and there's no reason to on a 5 year old system that will need replaced soon, there's no reason to go Nvidia when their hardware is an evolutionary stage behind the competition when it comes to parallel processing and will probably perform quite poorly on anything that comes out a few years from now.  That system would be CPU bound in most games under DX11 and lose a huge amount of performance versus what the 1080 is actually capable of, it's a terrible buy.

They've always had good budget cards, and for a PC that old, you really shouldn't buy anything else even if you have money to throw away.  This isn't coming from some Radeon fanboy either.  Whilst pining for the golden age of Voodoo cards, every system I've built myself has been run by a high end Geforce.  I don't see much hope of that continuing though, they're radically overpriced, and not the least bit future proofed.

@Psychoak  Voodoo cards - what a blast from the past !  Really appreciate your analysis. Its actually very helpful - cuts through the techno-babble.  Don't have cash to throw away, and even if I did, I would not.  [I live a frugal life based on limited income.  I helped other people instead of amassing a nest egg.]  In any case, I would be better off refreshing the silver-collant paste on the CPU to address the high temps, and save my discretionary income for an upgraded or newer rig. 

Summary:

1) for current rig, consider an "Rx 480. c300$  saphire, yada...

2) looking forward - update/repl rig, yes?  Might you suggest a process I could use to get to a good, foward usabe rig without taking gigiantic 'byte$'  out of me?

put this way. the cards that amd released this summer (polaris) are not aimed at the top performance market occupied by 1080/1070. supposedly vega is aimed at that segment.

i think the 480 is cheaper than 1060 but less power efficient and less powerful. the 1060 is around or just shy of 980 performance, but cheaper.

so, a polaris might be a good way to push my ring to near max graphics its capable of given bottlenecks in othe rparts of rig?

480/470/460 are the polaris cards. i don't think there's much point buying older stuff given the leap in performance at relative lower cost. if you are buying stuff, assuming you get the temp fixed, then you just have to decide whether to go amd or nvidia (1060 or the slower/cheaper 1050 when it's released). just a matter of how much money you want to spend at that time. (stuff comes out all the time)

See that is it are you looking for the best, the cheapest, or the best buy. Are we sure that a new graphics card would be better than a ssd or a new motherboard, or a new processor.