[Eurogamer] i3 6100 review

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dark zero

Platinum Member
Jun 2, 2015
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Makes sense that with smaller L3, this chip is more sensitive to RAM speeds.

Looks like a great part for budget gaming PCs.
Since new games requieres modern quads than HT duals por modules, the i3 is great, but going i5 is the real deal
 

sm625

Diamond Member
May 6, 2011
8,172
137
106
This is amazing.


It is just as fast using 2133 MHz DDR4. Why even bother with the faster stuff? At any rate there has to be something wrong here, most DDR4 benchmarks show relatively modest gains over DDR3. What we are seeing here is an aberration so large it cant be trusted. I mean, look at the Ryse numbers. It shows DDR3 2133 being way faster than DDR4 2133. That to me screams broken data.
 
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NTMBK

Lifer
Nov 14, 2011
10,269
5,134
136
Their FX6300 platform seems to have some problems

It is loosing half of the performance in Ryse and Crysis3 compared to 8350.

3.5GHz vs 4GHz, 3 modules vs. 4 modules. I can easily see the 6300 bogging down when the 8350 would handle it fine.
 

NTMBK

Lifer
Nov 14, 2011
10,269
5,134
136
It is just as fast using 2133 MHz DDR4. Why even bother with the faster stuff? At any rate there has to be something wrong here, most DDR4 benchmarks show relatively modest gains over DDR3. What we are seeing here is an aberration so large it cant be trusted. I mean, look at the Ryse numbers. It shows DDR3 2133 being way faster than DDR4 2133. That to me screams broken data.

It's comparing the Skylake+DDR4 2133 with Haswell+DDR3 2133.
 

Ken g6

Programming Moderator, Elite Member
Moderator
Dec 11, 1999
16,284
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It shows DDR3 2133 being way faster than DDR4 2133.
Remember, CAS latencies on DDR4 are about twice what they were on DDR3. I wonder what low-latency DDR4 would look like? :hmm: And I assume the cheaper boards will allow low latencies?
 

Insert_Nickname

Diamond Member
May 6, 2012
4,971
1,692
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And expensive. I considered it, but decided it was to close to i5 territory price-wise to make sense.

Not that I'm arguing with that statement, but I think the final decision depends on what you're going to use it for.

The closest Skylake i5 price wise is the 6400, but that only has a base clock of 2.7GHz (3.3GHz turbo). The 6320 is 3.9GHz, so for older software or pure single thread performance, the 6320 potentially has a 1.2GHz(!) frequency advantage. Even with turbo its still a 600MHz advantage. And lets face it, most software is still single thread bound. In those cases the 6320 is very hard to beat. In effect you'd need a 6600 minimum to match it with an i5.

For a casual non-gamer, the Skylake i3s look really attractive. Intel has a potential gem here, and that's not even considering the very nice Gen9 graphics.
 

AtenRa

Lifer
Feb 2, 2009
14,003
3,361
136
Not that I'm arguing with that statement, but I think the final decision depends on what you're going to use it for.

The closest Skylake i5 price wise is the 6400, but that only has a base clock of 2.7GHz (3.3GHz turbo). The 6320 is 3.9GHz, so for older software or pure single thread performance, the 6320 potentially has a 1.2GHz(!) frequency advantage. Even with turbo its still a 600MHz advantage. And lets face it, most software is still single thread bound. In those cases the 6320 is very hard to beat. In effect you'd need a 6600 minimum to match it with an i5.

For a casual non-gamer, the Skylake i3s look really attractive. Intel has a potential gem here, and that's not even considering the very nice Gen9 graphics.

Core i3 6100 only has 3MB of L3 cache.

Core i5 6400 has 6MB of L3 cache. Single Thread will be very close between the two even if i3 has 600MHz advantage. Multi Thread and Gaming will be way faster with the Core i5 due to larger L3 cache and Quad cores.

I would take a Core i5 with a cheap mobo than Core i3 with expensive Z170 mobo + more expensive ram.
 

Hi-Fi Man

Senior member
Oct 19, 2013
601
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106
I notice some have of you have forgotten that you can lower timings on cheaper motherboards, you don't need to run the RAM at 2666MT/s or whatever, you can run the RAM at 2133MT/s and lower the timings to achieve the same latency.

This is why RAM latency should be measured in nanoseconds.
 

Insert_Nickname

Diamond Member
May 6, 2012
4,971
1,692
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Core i3 6100 only has 3MB of L3 cache.

Core i5 6400 has 6MB of L3 cache.

The i3 6320 has 4MB of L3 cache. That's actually more per core cache then the i5...

Single Thread will be very close between the two even if i3 has 600MHz advantage. Multi Thread and Gaming will be way faster with the Core i5 due to larger L3 cache and Quad cores.

I would take a Core i5 with a cheap mobo than Core i3 with expensive Z170 mobo + more expensive ram.

Who said anything about a Z170 mainboard + more expensive RAM? If you're on a budget the i3 will run fine on a cheap H110/B150 board with the stock cooler, and regular DDR4-2133 or DDR3-1866.

I'm not advocating i3's for enthusiast use, unless one has specific needs, but for regular non-enthusiast consumers the Skylake i3's are unbelievable value.
 

crashtech

Lifer
Jan 4, 2013
10,554
2,138
146
Not that I'm arguing with that statement, but I think the final decision depends on what you're going to use it for.

The closest Skylake i5 price wise is the 6400, but that only has a base clock of 2.7GHz (3.3GHz turbo). The 6320 is 3.9GHz, so for older software or pure single thread performance, the 6320 potentially has a 1.2GHz(!) frequency advantage. Even with turbo its still a 600MHz advantage. And lets face it, most software is still single thread bound. In those cases the 6320 is very hard to beat. In effect you'd need a 6600 minimum to match it with an i5.

For a casual non-gamer, the Skylake i3s look really attractive. Intel has a potential gem here, and that's not even considering the very nice Gen9 graphics.
Yeah, I should have mentioned that looking the other way, you only give up 200Mhz by going with the 6100, but there is also the issue of the L3 cache being 1MB less. Traditionally that deficit wouldn't make that much difference in the kinds of things an i3 will be expected to run, but that might be changing. Probably be hard to isolate the effect of cache size.
 

DrMrLordX

Lifer
Apr 27, 2000
21,807
11,161
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So let's get this straight: if you pair an i3-6100 with a DDR4-2666 kit running at DDR4-2133 with tightened timings - which is something that is more-or-less an old Deneb/Thuban trick thanks to their cranky IMCs - you can achieve the same performance as if you had fully adjustable memory ratios?

Has anyone tested this to confirm? And is all that performance available on a budget chipset?

Also, what happens to the HD530 performance when you run it with DDR4-2133 CL13 vs DDR4-2666 CL15?
 

AtenRa

Lifer
Feb 2, 2009
14,003
3,361
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The i3 6320 has 4MB of L3 cache. That's actually more per core cache then the i5...

L3 Cache is shared with all cores. So at single threaded loads, the Core i5 Single Core, it has 6MB available of L3 Cache.


Who said anything about a Z170 mainboard + more expensive RAM? If you're on a budget the i3 will run fine on a cheap H110/B150 board with the stock cooler, and regular DDR4-2133 or DDR3-1866.

I'm not advocating i3's for enthusiast use, unless one has specific needs, but for regular non-enthusiast consumers the Skylake i3's are unbelievable value.

My respond was for those that want to pair the Core i3 with 2666MHz or faster memory. In that case you need a Z170 chipset motherboard.
 

Insert_Nickname

Diamond Member
May 6, 2012
4,971
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Yeah, I should have mentioned that looking the other way, you only give up 200Mhz by going with the 6100, but there is also the issue of the L3 cache being 1MB less.

Where I live, the difference isn't enough to really matter much if you're doing a whole build. The jump from 6100 to 6320 is almost the same as going from 6320 to 6400. But jumping from 6100 to 6400 is enough to make a slight dent.

But, yeah, if on a budget one could get along just fine with a 6100.

Traditionally that deficit wouldn't make that much difference in the kinds of things an i3 will be expected to run, but that might be changing. Probably be hard to isolate the effect of cache size.

L3 Cache is shared with all cores. So at single threaded loads, the Core i5 Single Core, it has 6MB available of L3 Cache.


Haswell i3's are capable of matching the i5's and i7's in single thread performance. I'd be very surprised if that isn't the case with Skylake as well.

 
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Hi-Fi Man

Senior member
Oct 19, 2013
601
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So let's get this straight: if you pair an i3-6100 with a DDR4-2666 kit running at DDR4-2133 with tightened timings - which is something that is more-or-less an old Deneb/Thuban trick thanks to their cranky IMCs - you can achieve the same performance as if you had fully adjustable memory ratios?

The timings in conjunction with the clock speed determine actual latency which you would measure in nanoseconds. The timings aren't an absolute measurement of latency.

Has anyone tested this to confirm? And is all that performance available on a budget chipset?

There are plenty of articles out there that describe this in detail (anandtech included). I should add that effective bandwidth does go down, however latency is far more important than bandwidth to a CPU when it comes to RAM (DDR4 has plenty anyways).

The Intel chipset nowadays is just a southbridge and imposed market segmentation. The only thing actually stopping you is the IMC on the CPU and while Intel has limits on RAM clockspeed on lower chipsets they don't have bandwidth or latency restrictions.

Also, what happens to the HD530 performance when you run it with DDR4-2133 CL13 vs DDR4-2666 CL15?

GPUs, unlike CPUs don't care about latency and crave bandwidth so performance would go down with the lower clocked RAM.
 

Hi-Fi Man

Senior member
Oct 19, 2013
601
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106
Something is definitely not right with the Ryse results - 92.8FPS vs 38.3FPS!

One thing I've noticed with Ryse is that this game is VERY sensitive to bandwidth. I remember reading a TPU article awhile ago measuring the effects of PCIe bandwidth on a 980 and the only game to show a large performance difference was Ryse. I think it has something to do with it being an Xbox One technological showcase title (purely speculation on my part though).
 

IntelUser2000

Elite Member
Oct 14, 2003
8,686
3,785
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Makes sense that with smaller L3, this chip is more sensitive to RAM speeds.

Nope. Always been that way.

DDR-400 upgrade was DDR2-667, not DDR2-533
DDR2-800 upgrade was DDR3-1333, not DDR3-1066

DDR3-1600's upgrade will therefore be DDR4-2666 not DDR4-2133. Only DDR vs SDR escapes that problem because the slowest DDR was at 200MHz, a full 50% higher than PC133 SDRAM.

With new memory generations the speed grade just above previous generation always had some issues. The reason was never so clear in synthetic memory benchmarks so I just chalk it up to "new architecture" and accept it.

I can guess now in 10 years when DDR5 comes out, people will be discussing about DDR5-4266 vs DDR5-6400.

Don't forget too that Haswell gets big boost from DDR3-1600 to DDR3-2133.

Update: It would have been awesome to get myself a Core i3 6100 to replace my setup. Too bad US dollar is so high compared to Canada. $170 makes you second, and third guess. ANY gaming I do is on a iGPU system which makes 2 core + Hyperthreading pretty much a 4 core + HT system since HT on 4 cores does nothing, and it would be nice to have it on a Mini ITX case.
 
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Byte

Platinum Member
Mar 8, 2000
2,877
6
81
Quite impressive for the i3. I just got an HP Envy to rip the 6700k from and will pair it with a Asrock Z170 Extreme7 with some 3000 ram combo, and was going to put a Pentium G4550 ($86) in there to make a nice HTPC upgrade. But i might as well spend the $30 for the lowest bin i3 ($117) to give it some gaming viability someday. Now i gotta debate if 1MB more cache is worth $20...
 

Blue_Max

Diamond Member
Jul 7, 2011
4,227
153
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Quite impressive for the i3. I just got an HP Envy to rip the 6700k from and will pair it with a Asrock Z170 Extreme7 with some 3000 ram combo, and was going to put a Pentium G4550 ($86) in there to make a nice HTPC upgrade. But i might as well spend the $30 for the lowest bin i3 ($117) to give it some gaming viability someday. Now i gotta debate if 1MB more cache is worth $20...

I was going to mention earlier that this i3's got the impressive 530 graphics. Could make for a very small, quiet Minecraft box! :wub:
 

DrMrLordX

Lifer
Apr 27, 2000
21,807
11,161
136
The timings in conjunction with the clock speed determine actual latency which you would measure in nanoseconds. The timings aren't an absolute measurement of latency.

I'm not talking about just bandwidth/latency numbers. Has anyone actually done head-to-head application/game benchmarks with these different settings?

Also, I never take for granted what a GPU is going to do until I've seen the benchmarks. I know GCN iGPUs like memory clockspeed over low timings, but I haven't seen any benches of HD530 showing this effect. It makes sense, but still.
 

Hi-Fi Man

Senior member
Oct 19, 2013
601
120
106
I'm not talking about just bandwidth/latency numbers. Has anyone actually done head-to-head application/game benchmarks with these different settings?

Also, I never take for granted what a GPU is going to do until I've seen the benchmarks. I know GCN iGPUs like memory clockspeed over low timings, but I haven't seen any benches of HD530 showing this effect. It makes sense, but still.

In my reply I mentioned there were (on anandtech). I don't think there is of HD 530 though.

It's Haswell but you can extrapolate,
http://www.anandtech.com/show/7364/memory-scaling-on-haswell/3
 
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USER8000

Golden Member
Jun 23, 2012
1,542
780
136
One thing I've noticed with Ryse is that this game is VERY sensitive to bandwidth. I remember reading a TPU article awhile ago measuring the effects of PCIe bandwidth on a 980 and the only game to show a large performance difference was Ryse. I think it has something to do with it being an Xbox One technological showcase title (purely speculation on my part though).

But this is comparing the FX8350 and the FX6300!! How can having one third more cores and at best maybe around 10% or maybe 15% greater clockspeed lead to a 2.5 times speedup??
 
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