When I first saw the Pentium G4560 at
$64 earlier this year, I thought
Gee, the Core i7
6850K is almost exactly 10 times, the price we should see if it's at all worth it
but
We kind of missed the boat on that one cause the Core i9 is here now so I mean
Who we even care about this?
comparison anymore anyway
Wait we'll just use its replacement, the Core i9 7820X!
And we'll just agree to disagree about how many times?
64 goes into 600
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Let's get this out of the way right now
We are not expecting the Pentium G4560 to go toe-to-toe with the Core i9
7820x that's stupid. I mean for one the Core i9 has turbo boost to say nothing of the six
extra cores that it's packing under the hood. Well ok Linus, then what is the point of this video?
I'm glad you asked. First
Since one is roughly 10 times the cost of the other we thought this would give us a good feel for how
pricing scales with performance within Intel's product stack because I think
Obviously we're not gonna be getting ten times the performance with the Core i9 right?
or will we?
No, we've been through that that's stupid. Reason number two is that this will give us some interesting insight into
bottlenecks and where they show up within the system for example, will the
rebalanced cache and
AVX-512 support of the core i9 help it? Will it hinder it? Will it depend on the workload?
How much will the extra cores help with real-world tasks? Does it even really matter?
Now, I know, I know
Raw performance
Isn't the whole story. The Core i9 has more than double the PCI Express Lanes
quad-channel memory support, blah, blah, blah, blah
And those features don't come cheap
so it makes sense that you'd be paying a premium for both the CPU and the accompanying motherboard and
Because the core i9 demands a better cooling solution
Surprise, you get to buy one of those two they even require more thermal compound
thanks to their larger physical size. I mean
The Pentium comes with a cooler and compound that's more than adequate for it right out of the box
So then with all these differences, how can we possibly compare the two?
Easy, we'll just dump a bunch of benchmarks into Excel like we always do and, wait really?
It's not all I'm paying these guys for? Oh no, there's more here actually. Oh cool
Okay, so while we'll be running the two chips on otherwise identical hardware. We are also
going to run a second set of tests on the 7820X with it
configured with only two cores enabled and clocked like a G4560 so in the past
This method of cutting down higher-end chips has generated pretty accurate simulations of lower end ones
But today, the new cache setup in support for AVX-512 might make things a little more interesting
Our gaming results, well okay? These ones aren't gonna shock anybody. our
simulated
4560 does slightly better than the real thing and the stock 7820X blows the doors off of both in every test
But...
While that difference is measurable our arch nemesis, Dr. Point of Diminishing Returns
Makes a bold appearance here
interestingly our simulated chip actually fell slightly
But measurably short of the real one at 4K in CSGO and in 3DMark
Which makes us wonder where else we might see Intel's new caching mechanism perform worse
bottom line here, if you thought that spending 10 times was gonna net you 10 times the performance in gaming
Ah, I believe as the gamers say get rekt
Productivity though was really interesting, in applications like Y-cruncher that support AVX-512
We saw a massive difference with the simulated G4560 while in more traditional tasks like Cinebench
CPUMark and real bench, the cache related performance boost is less exciting with real benches and
coding tests revealing another situation where it may actually cause a slight performance
regression
It's not over for the simulated chip though, because our real-world blender test also sees a huge
performance boost over the real 4560
in productivity applications, the lack of AVX and cores hurts our value chip big-time
The 7820X still
doesn't give you ten times the performance for its price
but
Given that many of these workloads are business oriented ones, time is money and even a 2x performance
Improvement or a more modest one could allow it to pay for itself over time so your mileage may vary
Power consumption is probably not gonna surprise anybody so we'll skim through that,
but what might is the performance scaling?
Using some simple math helpfully provided by Alex,
We crunched the numbers and calculated a very theoretical ballpark
for how pricing would look if it's scaled
Linearly with performance. So in that world from the perspective of Core i9
7820X, the performance averaged price of the Pentium would actually be roughly five times as expensive
As it is today
Then looking at it the other way around the price of the core i9
7820x would work out to about a quarter of its current MSRP of
$600. So what did we learn today? Well first and foremost that CPU pricing at least for Team Blue is
more complicated than just
How does it benchmark on a test bench and?
Then you know what price tag should we slap on it and more importantly perhaps,
we've also confirmed that Skylake X's new cache
Generally helps more than it hinders, though it can hinder
situationally
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