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AMD Ryzen 7 7840U Performance Benchmarks on Linux
- Kelteseth 3y agoStill waiting for my amd framework Laptop. They said early Q3. It would be the perfect machine for some nice summer coding on my balcony :*)
- pestatije 3y agowhat country? some places get it earlier than others
- Kelteseth 3y agoGermany
- bj-rn 3y agoIdk if this is too OT but I wonder how it would fare with an ambient temp of 37°C (forecast for today).
- ChuckNorris89 3y agoThere are countries with way hotter ambients than Germany, and CPUs have been documented to also work just fine there.
- bj-rn 3y agoIt's a genuine question though. I've got a ThinkPad P14s (gen2) sporting a AMD Ryzen 7 PRO 5850U CPU. The fans start spinning under sustained workloads (compiling, watching 4K youtube in fullscreen) and that at a room temperature of about 22°C. + 15°C seems non trivial. Granted I could just go outside today and test it out but I am not _that_ curious.
- ChuckNorris89 3y agoWhat are your measured CPU temps though? "Fans start spining under sustained load" is a pretty useless metric as that's pretty normal buhavilor unless you had a fanless M1. I have a Lenovo with a 5800U and temps are just fine. Never goes over 70C when benchmarking Cinebench at max boost on all cores. Pretty sure you're good if you at least dust the cooler regularly and repasted it correctly at least once since you bought it.
- adrian_b 3y agoThis is true, but nonetheless many computers are guaranteed to work only up to an ambient temperature of 35 degrees Celsius. In my opinion, this is an incredibly stupid design choice. After being once caught by surprise, now I check carefully for a specified working temperature of at least 40 degrees Celsius, whenever I am buying any laptop or desktop computers. This, for example, disqualifies all Gigabyte small computers. Moreover, any computer which does not specify explicitly the maximum working temperature must be automatically disqualified, because it is overwhelmingly likely that it has been designed for 35 degrees Celsius and not for any higher temperature. Some computers are guaranteed to work normally up to 35 degrees Celsius and to work with reduced performance between 35 degrees Celsius and 40 degrees Celsius, for instance many Intel NUCs. This is perfectly OK.
- jorvi 3y agoAs long as you need reliability and are willing to discard all aesthetics, just go for a Thinkpad..
- qludes 3y agoJust checked the Lenovo PSREF for my MIL-STD-810H certified Zen3+ Thinkpad: Operating Environment Temperature[1] Operating: 5°C (41°F) to 35°C (95°F) Storage and transportation in original shipping package: -20°C (-4°F ) to 60°C (140°F) Storage without package: 5°C (41°F) to 43°C (109°F) Humidity Operating: 8% to 95% at wet-bulb temperature 23°C (73°F) Storage and transportation: 5% to 95% at wet-bulb temperature 27°C (81°F) Altitude Maximum altitude (without pressurization): 3048 m (10,000 ft) Notes: 1. When you charge the battery, its temperature must be no lower than 10°C (50°F). So if you're in a really hot climate that might not be enough. Rn it's 31°C here in the shadows and idling SoC temperature is ~45°C.
- formerly_proven 3y agoIn that case, just go for a rugged laptop ala Getac. The S410 is specified for -30° to 65°C (-20 to 145 °F) operating ambient temperature. Whether you are is on a different spec sheet...
- Tade0 3y agoI suppose some of it can be attributed to general unpleasantness of 37°C and impatience that comes with it, but I have another data point: A while ago my laptop started running around 10°C hotter than it should have - turns out the iGPU was going wide open throttle for no apparent reason. What I found was that CPU-intensive tasks slowed down as well, because those 10°C make a huge difference in terms of when the CPU starts throttling. I wasn't bothered by this too much, even though I had to disable turbo altogether, until the first heat wave of the season hit - +10°C from the iGPU combined with +10°C from the heatwave slowed the device to a crawl - it was the first time I briefly saw it hit 102°C - that is actually above the usual safety threshold. I think people in different climates either have A/C or are used to different levels of performance.
- kalleboo 3y agoI live in Asia and summers are routinely 37 C. Apple's new chips are a GODSEND for laptops. My old Intel laptops would nearly instantly thermally throttle under any trivial load without air conditioning at full blast and a fan aimed at the machine.
- helf 3y agoI live in Alabama and I cannot imagine places that you can happily exist in without AC. It routinely hits 37-40C here during the summer /and/ 80%+ humidity. A week ago it was ambient temp 39C with a Heat Index of 45C. I hadn't thought about the Apple Silicon being a pro in that environment but now I'm tempted to get one lol.
- esperent 3y agoI also live in Asia (Vietnam) and my previous two laptops have had Intel chips (current: MSI GE66 i7+3070, previously an old Clevo with a 970m). I've never had noticeable thermal throttling even when running in very hot summers in rooms with barely functioning AC (which is basically every room here). My northern European body struggles - a lot - but I haven't seen my laptops being much bothered. I do a lot of intense 3d work, I would notice if it started throttling. Maybe the problem was your laptop?
- f6v 3y agoDon’t start this, AC hasn’t been invented in Germany yet.
- rozenmd 3y agoit has, you just have to call it a "heat pump"
- LargoLasskhyfv 3y agoÄhm. Nein. That is a rumour. https://www.lg.com/de/klimaanlagen/lg-ac24bk https://www.lg.com/de/klimaanlagen/lg-ac24bk or https://www.lg.com/de/business/klimaanlagen https://www.lg.com/de/business/klimaanlagen You just need to be able to afford it, and have the ok to install from the landlord, HOA, whatever, or actually OWN the place. Imagine...
- zackify 3y agoI’ve been annoyed they can’t provide any updates. How hard is it to provide a few sentence update every week like they do with the 16
- zbrozek 3y agoDitto. My current laptop is starting to get flaky and I'm getting increasingly itchy for a replacement, so I might start looking for quicker-shipping alternatives.
- ChuckNorris89 3y agoFor those unaware, this isn't AMDs top of the line laptop chip, but the top of the line ultra low power laptop chip. It's meant for ~15W thin and light devices, not thick gaming laptops, AMD has 35W parts for those.
- shmerl 3y agohttps://www.amd.com/en/product/13186 https://www.amd.com/en/product/13186 Notable improvements from previous generation: * AV1 encoding * AVX512 support
- adrian_b 3y agoNot only AV1 encoding and decoding is available, but all video encoders and decoders are many times faster than in the previous AMD integrated GPUs, allowing the transcoding of many video streams in parallel.
- adrian_b 3y agoThe top models of AMD Phoenix, i.e. of the laptop CPUs which are intended to be used with their integrated GPU, not with an external discrete GPU, are Ryzen 9 7940HS and Ryzen 7 7840HS. Many benchmarks for these 2 models can be seen at: https://www.servethehome.com/minisforum-um790-pro-review-big-upgrade-to-a-small-amd-system/ https://www.servethehome.com/minisforum-um790-pro-review-big... TLDR: Both Ryzen 9 7940HS and Ryzen 7 7840HS laptop CPUs (which are slower than the Ryzen HX laptop CPUs) are faster than the fastest 65 W desktop Intel Alder Lake CPU, Core i9-12900 (despite the fact that the latter not only uses more power, but it has 50% more threads).
- AnthonyMouse 3y agoTo be fair, comparing mobile CPUs to desktop CPUs on power consumption is basically meaningless, because desktop CPUs will double the power consumption to get a few extra percent on performance, performance per watt be damned. And it's comparing against the previous generation 12900 instead of the current generation 13900. And the extra threads on the 12900 are the E-cores, which aren't that fast. Basically the result is that current gen AMD mobile CPUs are faster than last gen Intel desktop CPUs. Which is true, and not unimpressive, but far less informative than a comparison of like with like would have been.
- KingOfCoders 3y agoSadly no M2 comparisons (I know they are a Linux site)
- ksec 3y agoIf you plug some numbers in, In terms of Pref / Watt M2 is still ahead. But 7840U has closed the gap.
- okamiueru 3y agoDoes this mean that the Perf/Watt of the M2 Max 12 Core is almost half that of the Ryzen 9 7945HX? I think it's impressive to not only double the performance, and still keep roughly the same power rating.
- webmobdev 3y agoBlame Apple - Linux is still a 2nd grade beta OS as the team trying to port Linux to Apple is still working on reverse-engineering many of the parts of M1 / M2 SoC. Until Apple actually provides documentation to system developers, we'd be fools to buy and trust the M1+ platform.
- viraptor 3y agoI wouldn't be that strict. It's not like many PC laptop manufacturers provide drivers or documentation. Buying a laptop like Acer or other known brand, you're still relying on a few reverse engineered devices.
- Vogtinator 3y agoOnly a few though. Support for the CPU, chipset components and GPU are contributed by the component vendors themselves. Other components use standard interfaces, like AHCI, XHCI, NVMe, HD audio, ... Not much remains up to the brands like Acer which didn't really provide any components themselves, only put them together. Meanwhile on the M1, even keyboard support was implemented fairly late and is not mainline yet.
- shmerl 3y agoSo when are Lenovo Thinkpads with such chips coming out?
- EspadaV9 3y agoWaiting for this too. Should be in the next Gen (4 or 5?) ThinkPad T14/s I think.
- shmerl 3y agoYeah. I think it's Gen 4. Currently listed ones are Gen 3.
- hospitalJail 3y agoCan anyone explain why so many people want this? If I am running a beefy single threaded or multi program with CPU, I want the best, not some low power device. Gaming laptop.(Or whatever we want to call it) If I'm running consumer/enterprise software, I likely want a beefy GPU. Gaming laptop.(Or whatever we want to call it) If I'm taking a 7 hour bus ride in a bus without a 120V outlet, I want this. If I'm taking a 6 hour bus ride in a bus without a 120V outlet, I want a gaming laptop.(Or whatever we want to call it) What is the use case? I got a feeling these companies are chasing Apple's insignificant metric of compute/watt, which doesn't matter as far as I understand.
- deleted 3y ago[deleted]
- KeplerBoy 3y agoWhy would you want a beefy GPU in anything except a gaming laptop or full blown workstation replacement? Also on the bus ride. I certainly wouldn't want to unpack a 17" gaming laptop on a bus of all places. You couldn't use a external mouse anyways. There I'd want a steam deck or Nintendo switch.
- hospitalJail 3y ago
- bluecalm 3y agoIt's a pretty big difference! Often 20+% on the benchmarks. I have the previous gen CPU in my ThinkPad and it's the quietest, most pleasant laptop I have ever had. All Intel ones I dealt with are like old fridge in comparison (loud and hot outside).
- deleted 3y ago[deleted]
- lhl 3y agoFor those interested in seeing more about how these new 7040 APUs (Zen4 + RDNA3 "Phoenix") perform, Notebookcheck just reviewed a 7840HS (65W max TDP I believe) minipc: https://www.notebookcheck.net/AMD-Ryzen-7-7840HS-performance-debut-Beelink-GTR7-mini-PC-review.730507.0.html https://www.notebookcheck.net/AMD-Ryzen-7-7840HS-performance... Although not Linux specific, the nice thing about Notebookcheck is they have a nice database of other CPUs/devices that you can easily compare against. ServeTheHome has been reviewing a lot of these minipcs as well, here's their review of another one w/ Linux compile times and a few other Linux benchmarks: https://www.servethehome.com/minisforum-um790-pro-review-big-upgrade-to-a-small-amd-system/3/ https://www.servethehome.com/minisforum-um790-pro-review-big... For those that don't know, the U, HS, and H chips are basically the same chip with slightly different bins and usually can have their TDP modified in BIOS, via Ryzen Master, or third party tools like RyzenAdj (Phoenix support: https://github.com/FlyGoat/RyzenAdj/pull/256 https://github.com/FlyGoat/RyzenAdj/pull/256) to perform pretty closely. (This generation the HX is a '7045' chip is closer to a desktop chip than a mobile APU)
- brucethemoose2 3y agoNotebookcheck is a saint. I have never seen such thorough, technical reviews of laptops anywhere else, much less so many of them. I really hope they stay alive in this video review age.
- jauntywundrkind 3y agoTheir tech product news feed is also unparalleled. Definitely not for a lot of people, but for those who do want to see what's coming out for monitors, phones, tablets, laptops, et cetera, https://www.notebookcheck.net/News.152.0.html https://www.notebookcheck.net/News.152.0.html is seemingly the definitive place to be.
- up6w6 3y ago> usually can have their TDP modified in BIOS, via Ryzen Master, or third party tools like RyzenAdj (Phoenix support: https://github.com/FlyGoat/RyzenAdj/pull/256 https://github.com/FlyGoat/RyzenAdj/pull/256) to perform pretty closely. I didn't know about that. Do you have citations or benchmarks?
- rewmie 3y agoI hope this processor finds it's way into a miniPC such as the ones sold by Beelink or minisforum. Having a quiet but beefy tiny desktop with 8cores/16threads tucked away out of sight would be a superb machine to have, and would also make me consider ditching any laptop.
- user_named 3y agoThey both already have models with these chips. Check out UM790 from Minisforum
- rewmie 3y agoOh thanks for pointing this out! I completely missed that, but a quick googling led to a couple of reviews posted just a few days ago. https://www.servethehome.com/minisforum-um790-pro-review-big-upgrade-to-a-small-amd-system/ https://www.servethehome.com/minisforum-um790-pro-review-big... Very impressive machine, and quite affordable. Bonus points for Minisforum for offering barebones versions.
- rfoo 3y agoBeelink also offers barebone version if you live close enough to them. I'd prefer minisforum though, according to STH and other user reviews it's way quieter and cooler, and doesn't have the troublesome magnetically attached power cable. The only reason I didn't return my Beelink GTR7 is there was a deal and I got it for only ~$370 (barebones).
- deleted 3y ago[deleted]
- umvi 3y agoAnyone know of a cloud service for trying out consumer CPUs like this?
- curiousWaste 3y agoI have currently 7300HQ based laptop. Would this provide good perf improvement to web dev, primarily based on vite, or is it bottlenecked by something else. Currently its somewhat sluggish but I guess its not worlds end.
- beebeepka 3y agoIt's going to be night and day for sure. Your CPU wasn't great when it launched. I have several Ryzen laptops, including a 6800H. The thing is as fast as the latest and greatest from Apple, although with a bit worse battery life. I get about 12 hours in Linux with Gnome. Very quiet. The fan turns on only during gaming, or prolonged compiling. The mobile Ryzen 7000 line is a bit messy, though. If you want the Zen 4 stuff, you need to look for a 7x4x model, such as the 7840 from this article. 7 is the generation. 4 indicates that it's a Zen 4 part. There are many 7x3x parts on the market because they are simply rebranded Zen 3 (5000 and 6000) parts.
- curiousWaste 3y agoThanks, might upgrade to lenovo yoga slim 7 when it comes available. It has 7840u and oled screen. I was just looking oled laptop screens on electronic store today. It looked great even text which some say looks poor on oled.
- beebeepka 3y agoJust in case you are going to be running Linux - make sure the WiFi drivers have been mainlined. It can be a problem with newer models. Make sure you run the 6.2 kernel or newer. Second best option would be to build the drivers yourself, assuming they are available in the first place
- jftuga 3y agoPassMark - AMD Ryzen 7 7840HS https://www.cpubenchmark.net/cpu.php?cpu=AMD+Ryzen+7+7840HS&id=5258 https://www.cpubenchmark.net/cpu.php?cpu=AMD+Ryzen+7+7840HS&... * multithread: 31124 * single thread: 3945 * number of samples: 15 * margin for error: medium