2500k system, continue upgrading GPU?

Funky-Melon · 15 Oct 2018 at 20:32

Van_Dammesque said:
I'm confused, 2700k has 4 cores and so does a 2500k? Yet 8 v 4 threads according to cpuboss (won't link due to competitors)?

Yep, and it's those extra threads that make all the difference.

Van_Dammesque · 15 Oct 2018 at 20:36

Funky-Melon said:
Yep, and it's those extra threads that make all the difference.

But aren't threads just a core split up? So why the performance gain? If all cores/threads are 100% then surely the 3.3 vs 3.5 GHz is a little difference?
You can't squeeze blood out of a stone.

Shiari · 16 Oct 2018 at 07:57

Van_Dammesque said:
But aren't threads just a core split up? So why the performance gain? If all cores/threads are 100% then surely the 3.3 vs 3.5 GHz is a little difference?
You can't squeeze blood out of a stone.

Hyperthreading works to utilise the parts of a core that are idle to run the work of another thread. For example, if the integer unit is processing an instruction for the main thread, then the floating point unit can process an instruction for the secondary thread. A compiler would already make some use of features like that to schedule instructions in an order that the CPU can best process things, but hyperthreading takes it up another level across different programs.

All in all it's can give up to 15-30% or so extra performance, depending on the workload.

fastwunz · 16 Oct 2018 at 08:10

Funky-Melon said:
Yep, and it's those extra threads that make all the difference.

Sorry yes thats what i meant lol

Van_Dammesque · 16 Oct 2018 at 11:02

Shiari said:
Hyperthreading works to utilise the parts of a core that are idle to run the work of another thread. For example, if the integer unit is processing an instruction for the main thread, then the floating point unit can process an instruction for the secondary thread. A compiler would already make some use of features like that to schedule instructions in an order that the CPU can best process things, but hyperthreading takes it up another level across different programs.

All in all it's can give up to 15-30% or so extra performance, depending on the workload.

Thanks for the explanation, I always thought multithreading was purely a percentage rather than what you describe.

I have a 2500k at 4.5 Ghz, so I am interested in getting a new CPU whilst keeping my m'board and ram.
Wouldn't a 3770k be the best option for a small amount of extra cash? (I believe this is the highest cpu for the 1155 chipset.)

Funky-Melon · 16 Oct 2018 at 11:06

Van_Dammesque said:
Thanks for the explanation, I always thought multithreading was purely a percentage rather than what you describe.

I have a 2500k at 4.5 Ghz, so I am interested in getting a new CPU whilst keeping my m'board and ram.
Wouldn't a 3770k be the best option for a small amount of extra cash? (I believe this is the highest cpu for the 1155 chipset.)

The 3770k and 2600k are pretty much the same performance wise, it's marginally better (+5fps) but commands another £50+ on top of a 2600k.

Marine-RX179 · 16 Oct 2018 at 11:25

Van_Dammesque said:
Thanks for the explanation, I always thought multithreading was purely a percentage rather than what you describe.

I have a 2500k at 4.5 Ghz, so I am interested in getting a new CPU whilst keeping my m'board and ram.
Wouldn't a 3770k be the best option for a small amount of extra cash? (I believe this is the highest cpu for the 1155 chipset.)

If I was in your shoes, I'd rather go for either a 2600K/2700K that still have proper soldering with lower temp than the Ivybridge CPUs with toothpaste TIM between the chip and the heat-spreader acting like a bloody sauna.

It would be great to upgrade to the platform to the AMD 2700x though, or go for a Ryzen 2600 upgrade on the budget side.

Van_Dammesque · 16 Oct 2018 at 11:43

Marine-RX179 said:
If I was in your shoes, I'd rather go for either a 2600K/2700K that still have proper soldering with lower temp than the Ivybridge CPUs with toothpaste TIM between the chip and the heat-spreader acting like a bloody sauna.

It would be great to upgrade to the platform to the AMD 2700x though, or go for a Ryzen 2600 upgrade on the budget side.

Thanks for the info, read a review and confirms what you said! Will look at a 2600k or 2700k. It would also mean not having to flash my bios which can be a minefield in of itself.

Marine-RX179 · 16 Oct 2018 at 12:07

Van_Dammesque said:
Thanks for the info, read a review and confirms what you said! Will look at a 2600k or 2700k. It would also mean not having to flash my bios which can be a minefield in of itself.

Yea swings and roundabouts...the Ivybridge may have slightly higher IPC than Sandybridge, but with a non-delidded Ivybridge CPU the overclock it pretty averaging for users at 4.2-4.3GHz, and max out at around 4.5GHz~4.6GHz max before temp become an issue, whereas the Sandbridge CPUs can generally averaging at 4.5GHz, and maxing out between 4.7-5GHz.

ahar · 16 Oct 2018 at 13:26

I've just done exactly what the OP has suggested and slung a 1080ti into my 2500K to replace a RX480 and seen average frame rates up 40% in Total War: Warhammer II and World of Tanks, along with a move to a 1440p monitor. I assume its CPU bound and will go higher - need to get permission from The Boss to spend some more money on an AMD 2700x.

The 2500k surely has to go down as the best overclockers chip in history!

Shiari · 16 Oct 2018 at 18:26

ahar said:
The 2500k surely has to go down as the best overclockers chip in history!

I'd vote for the Q6600 stepping G0 to get that title.

Man-In-A-Teapot · 19 Oct 2018 at 02:07

2500K certainly still doing OK for longevity - I got mine summer 2011 and still going strong, so should easily get to at least 8 years (could be tempted by Ryzen 2) - seems mad compared to late 90s/early 2000s and how often I upgraded then. Computer has had RAM doubled since then, second hard disk added, SSD changed for one 4 times the size, graphics card upgraded, and a new monitor. Seems to now be the minimum level of CPU I need (with some overclocking) - next big game I'm planning to get is Hitman 2, and looks like its still OK for that.

One Vision · 20 Oct 2018 at 23:47

I wouldnt bother id still stick with the 2500k tbh. Just Overclock it.

Marine-RX179 · 22 Oct 2018 at 12:36

Man-In-A-Teapot said:
2500K certainly still doing OK for longevity - I got mine summer 2011 and still going strong, so should easily get to at least 8 years (could be tempted by Ryzen 2) - seems mad compared to late 90s/early 2000s and how often I upgraded then. Computer has had RAM doubled since then, second hard disk added, SSD changed for one 4 times the size, graphics card upgraded, and a new monitor. Seems to now be the minimum level of CPU I need (with some overclocking) - next big game I'm planning to get is Hitman 2, and looks like its still OK for that.

I'm on the exact same boat with my 2500K system that I also built back in 2011.

Although I am really tempted to upgrade to the AMD 2700x, I am trying really hard to hold out for the AMD 3rd gen Ryzen that's gonna be on 7nm, which would certainly be quite a bit a jump in performance and efficiency.

Badelhas · 22 Oct 2018 at 17:05

I am in a similar boat. I own a 2500K OCed @4.4Ghz (best CPU of all time, imo) with a 1070 GPU and game at 1440p. I have been debating if spending 650 Euros (2700X + Mobo + 16Gb Ram) is really worth it. Read some reviews, videos, forums and still cant find a definitive answer...
What do you guys think?

Cheers

Van_Dammesque · 22 Oct 2018 at 19:17

If you can afford the 2700x Ryzen then you will see good results! (check out various reviews on Youtube or cpu boss).

Van_Dammesque · 22 Oct 2018 at 19:20

OK my results!

Went from a 2500k at 4.5 GHz to (so far! seeing a 5degC drop to 2500K) to 4.5 GHz 2600k!

In single thread I see the same performance-ish (eg. Linpack/Intel BurnIn) BUT a whopping 30% in 3d mark CPU(Physics) test!

Brief testing so make of that you will! And I was lazy and reloaded the OC'd bios profile from the 2500k

TaKeN · 22 Oct 2018 at 19:32

Try for more with the 2600k, I recently went from a 2500k @ 4.5 to a 2700k that does 4.8 on less voltage! ..can boot in to windows at 5.0 but it needs more than 1.4v and I'm not happy with that.

Mr Krugga · 22 Oct 2018 at 19:55

Get a used i7 2600k for around £80, overclock it to 4.5 GHz, sell your i5 2500k for £30+, that's a £50 upgrade that's gonna give you a nice boost in minimum frametimes.

Then hop on MM and grab a nice 1080 Ti for under £500.

A better option than either of your OP considerations.

Nasher · 22 Oct 2018 at 20:00

Ryzen is the way to go atm if buying new. You get a lot more for your money.