So compare - 1) 2018 Mac mini 3.0 base block i5, with turbo boost to 4.1 2) 2017 iMac 3.8 base clock i5 with turbo boost to 4.2 Both have almost the same SINGLE CORE Geekbench score, and I assume that's because in the time it takes to run the Geekbench tests, both machines can remain running at full turbo boost. However, lets say I've got a video render or export that takes 30+ minutes. Would the iMac then come out ahead since neither machine could maintain turbo boost that long, and the iMac actually has a higher base clock speed? According to the expert at Bare Feats, a lower base clock with a high turbo boost will eventually lag behind, but he doesn't actually test it.
Does anyone know where there are extrended stress tests to determine what, if any, disadvantage there is to having a lower base clock, but a super high turbo boost speed? So compare - 1) 2018 Mac mini 3.0 base block i5, with turbo boost to 4.1 2) 2017 iMac 3.8 base clock i5 with turbo boost to 4.2 Both have almost the same Geekbench score, and I assume that's because in the time it takes to run the Geekbench tests, both machines can remain running at full turbo boost. However, lets say I've got a video render or export that takes 30+ minutes. Would the iMac then come out ahead since neither machine could maintain turbo boost that long, and the iMac actually has a higher base clock speed?
According to the expert at Bare Feats, a lower base clock with a high turbo boost will eventually lag behind, but he doesn't actually test it. Does anyone know where there are extrended stress tests to determine what, if any, disadvantage there is to having a lower base clock, but a super high turbo boost speed? Click to expand.The answer is: It depends. Winbootinfo keygen for mac mac. IMO Geekbench is a lousy measure of a computers performance for anything other than running Geekbench. Specifically for the reason you state: It doesn't sufficiently stress the system and therefore its scores don't represent what one would see with real world applications that do. I have a 2010 Mac Pro and a 2012 rMBP and transcoding on the Mac Pro is considerably faster than the rMBP despite the latters higher GB score.
It's my educated guess, and that's all this is since I have no real world experiences with either of these systems, is the iMac will outperform the Mini under such tasks which force the processor to operate near its base frequency (which is 26% faster on the iMac, but take a little off for IPC improvements in the Mini processor). What tasks would those be? Anything which causes the processor to operate near full utilization.
Doing so increases heat which will have to be offset reduced clock speed. I've engaged in a number of discussions with new Mini owners attempting to get some Handbrake benchmark data to see what frequency the Mini tends to operate at under full CPU utilization. Unfortunately there's just not enough data to draw any conclusions. What I have seen is the Mini, even when utilizing all cores for lengthy periods of times, operates a little bit above the base frequency.
Short answer: yes. Long answer: yes, but Mac Mini is relatively cool and can maintain higher turbo for a significant amount of time compared to i.e. MacBook Pro i9. Thats why desktops are usually better, because they have better cooling and higher base frequencies and can maintain higher CPU speed for longer.
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I see iMac and Mac Mini as a “cross” between mobile and desktop and performance reflects that. Imac pro, mac pro have higher sustained values, because of better cooling and workstation chips.
So compare - 1) 2018 Mac mini 3.0 base block i5, with turbo boost to 4.1 2) 2017 iMac 3.8 base clock i5 with turbo boost to 4.2 Both have almost the same SINGLE CORE Geekbench score, and I assume that's because in the time it takes to run the Geekbench tests, both machines can remain running at full turbo boost. However, lets say I've got a video render or export that takes 30+ minutes.
Would the iMac then come out ahead since neither machine could maintain turbo boost that long, and the iMac actually has a higher base clock speed? According to the expert at Bare Feats, a lower base clock with a high turbo boost will eventually lag behind, but he doesn't actually test it. Does anyone know where there are extrended stress tests to determine what, if any, disadvantage there is to having a lower base clock, but a super high turbo boost speed? Click to expand. Turbo boost doesn't meant sustained max ghz. It's a metric most useful in single threaded tasks. The cpu is limited by both thermal throttles, as well as power consumption.
If the CPU is using all it's cores, it won't be running at max ghz on every core (and it wasn't designed to). Your mileage will vary on each cpu, but typically turbo boost CPUs under load will hover only slightly above base clock with laptop configs, moderately above base clock on apple desktop configs (this includes the 2018 mac mini, but not earlier), or halfway+ between turbo/base on a super cooled PC. The answer is: It depends. IMO Geekbench is a lousy measure of a computers performance for anything other than running Geekbench. Specifically for the reason you state: It doesn't sufficiently stress the system and therefore its scores don't represent what one would see with real world applications that do. I have a 2010 Mac Pro and a 2012 rMBP and transcoding on the Mac Pro is considerably faster than the rMBP despite the latters higher GB score.
It's my educated guess, and that's all this is since I have no real world experiences with either of these systems, is the iMac will outperform the Mini under such tasks which force the processor to operate near its base frequency (which is 26% faster on the iMac, but take a little off for IPC improvements in the Mini processor). What tasks would those be? Anything which causes the processor to operate near full utilization. Doing so increases heat which will have to be offset reduced clock speed. I've engaged in a number of discussions with new Mini owners attempting to get some Handbrake benchmark data to see what frequency the Mini tends to operate at under full CPU utilization. Unfortunately there's just not enough data to draw any conclusions.
What I have seen is the Mini, even when utilizing all cores for lengthy periods of times, operates a little bit above the base frequency. Click to expand.I'd be happy to run any test for comparison. However I can only do so with software I have or can download at no cost. Typically the benchmarking I've done is Geekbench (not a fan), Cinebench, and Handbrake using a common source file (typically a Samsung 4k demo) using a common preset.
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If that works for you let me know what you'd like me to test. I have the following systems:. 2013 nMP, hexa core @ 3.5GHz, 16GB, 256GB SSD.
2010 cMP, quad core @ 3.46GHz, 32GB, 1TB spinner. 2012 rMBP core i7, 16GB, 768GB SSD. Z440, quad core, 3.5GHz, 16GB, 1TB SSD I have other systems but I think these would be of the most interest to you. Click to expand.I'm unclear if you're talking about an advertised boost of large vs small for different Intel parts, or are you referring to some people having better experience with the same part than others.
If it's the former, Intel can essentially bin the same or similar parts based upon silicon quality. There's a process on a per-core bases that's happening in the background, where each core requests a certain voltage based upon workload at every specific moment.
Then the motherboard is working to meet that requirement, along with the associated current based upon that workload. Lower quality silicon can be sold as less expensive parts with lower expected turbo performance, based upon higher power requirements needed to hit boost targets. Apple doesn't allow any sort of tweaking, but enthusiast motherboards offer very fine tuning of frequency, per-core voltage, and current (so thus package power). Enthusiast boards in the PC space also allow for a selection of motherboards with overbuilt VRMs that are designed to provide higher than usual TDP for extended or indefinite lengths of time. Meanwhile there's a whole different set of processes in play to govern the turbo performance/duration, and the best read would be here: In the end we're left with a Mini (or whatever form factor) that uses the parameters described in the article above to govern turbo performance with an individual processor sample, chassis, cooling system, thermal paste application, ambient temperature, VRM quality, and workload.
There are just a lot of variables in play, and like it or not. Silicon lottery is a real thing. Even within a specific Intel part, there's a lot of variability in regard to quality. In the enthusiast PC scene, people will pay obscene amounts of money for CPUs that are of exceptionally high quality. See: This silicon lottery is especially important for overclocking, but you can think of Intel's turbo as a sort of automatic overclocking process.
Click to expand.In reality, all current processors are actually boosting from a idle base clock of 1Ghz. The fact that an i7MBPro may say 2.3 with boost to 4.1 Ghz versus i7mini 3.2 with boost to 4.1 appears simply due to the stated TDP rating of each processor: The MBPro can maintain 2.3 (minimum) cross all cores within 45 Watts. The mac mini can maintain 3.2 (minimum) across all cores within 65 watts.
Other than that, it seems to me that they don't really need to be different CPUs (even though they most likely are). Moreover, the misnomer is really saying that the i3 doesn't have a turbo boost. It certainly does compared to its idle speed, it is just that the 'turbo' is capped at 3.6 Ghz, which is at or below its 4-core 65 Watt TDP. The main thing that turbo permits, it seems, is the ability to temporarily exceed the TDP rating. Which, as explained eloquently above by brentsg, is dependent on a host of other parameters including, VRM output, cooling, ambient temp, workload, CPU quality, etc. I'd be happy to run any test for comparison.
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However I can only do so with software I have or can download at no cost. Typically the benchmarking I've done is Geekbench (not a fan), Cinebench, and Handbrake using a common source file (typically a Samsung 4k demo) using a common preset. If that works for you let me know what you'd like me to test. I have the following systems:. 2013 nMP, hexa core @ 3.5GHz, 16GB, 256GB SSD.
2010 cMP, quad core @ 3.46GHz, 32GB, 1TB spinner. 2012 rMBP core i7, 16GB, 768GB SSD. Z440, quad core, 3.5GHz, 16GB, 1TB SSD I have other systems but I think these would be of the most interest to you.
2018 MacBook Pro models feature the biggest yearly CPU performance gains since 2011, according to Geekbench founder John Poole. Indicate the latest 15-inch models have a 12 to 15 percent increase in single-core performance, while multi-core performance is up 39 to 46 percent, compared to the equivalent 2017 models. A new 15-inch MacBook Pro with the best-available 2.9GHz six-core Intel Core i9 processor, with Turbo Boost up to 4.8GHz, has a multi-core score of 22,439, for example, a 44.3 percent increase versus a 2017 model with a then-best 3.1GHz quad-core Core i7 and Turbo Boost up to 4.1GHz. Likewise, for the latest 13-inch models, Geekbench scores show a 3 to 11 percent increase in single-core performance, and an impressive 81 to 86 percent increase in multi-core performance versus equivalent 2017 models. A new 13-inch MacBook Pro with the best-available 2.7GHz quad-core Intel Core i7 processor, with Turbo Boost up to 4.5GHz, has a multi-core score of 17,557, for example, an 83.8 percent increase versus a 2017 model with a then-best 3.5GHz dual-core Core i7 and Turbo Boost up to 4.0GHz. Poole attributes the increases in performance to additional cores, higher Turbo Boost frequencies, and the switch to DDR4 memory.
2018 MacBook Pro models feature eighth-generation Intel Core processors, with up to six cores on 15-inch models and up to four cores on 13-inch models, both firsts. The refresh marked the first increase in cores since 2011, when the first quad-core 15-inch MacBook Pro models were released. Interestingly, as Poole notes, the new 13-inch MacBook Pro with Touch Bar models are now competitive with 15-inch models from 2017 in both single-core and multi-core performance, essentially making it a smaller replacement.
Poole also notes that these Geekbench scores are preliminary, and likely to rise over the coming weeks, as on brand new machines, macOS completes several setup tasks in the background that can temporarily degrade performance. He says these tasks vary and can take up to several days to be completed. Apple advertises the new 15-inch MacBook Pro as up to 70 percent faster, and the new 13-inch model as up to two times faster, than the equivalent 2017 models, but Poole told MacRumors that other benchmarks may show different results than Geekbench. Performance in real-world usage will also vary. Geekbench 4 is a popular cross-platform CPU and GPU benchmark from Primate Labs, with apps available for.