The AnandTech Coffee Lake Review: Initial Numbers on the Core i7-8700K and Core i5-8400
by Ian Cutress on October 5, 2017 9:00 AM EST- Posted in
- CPUs
- Intel
- Core i5
- Core i7
- Core i3
- 14nm
- Coffee Lake
- 14++
- Hex-Core
- Hyperthreading
Benchmarking Performance: CPU Encoding Tests
One of the interesting elements on modern processors is encoding performance. This includes encryption/decryption, as well as video transcoding from one video format to another. In the encrypt/decrypt scenario, this remains pertinent to on-the-fly encryption of sensitive data - a process by which more modern devices are leaning to for software security. Video transcoding as a tool to adjust the quality, file size and resolution of a video file has boomed in recent years, such as providing the optimum video for devices before consumption, or for game streamers who are wanting to upload the output from their video camera in real-time. As we move into live 3D video, this task will only get more strenuous, and it turns out that the performance of certain algorithms is a function of the input/output of the content.
All of our benchmark results can also be found in our benchmark engine, Bench.
7-Zip 9.2: link
One of the freeware compression tools that offers good scaling performance between processors is 7-Zip. It runs under an open-source licence, is fast, and easy to use tool for power users. We run the benchmark mode via the command line for four loops and take the output score.
WinRAR 5.40: link
For the 2017 test suite, we move to the latest version of WinRAR in our compression test. WinRAR in some quarters is more user friendly that 7-Zip, hence its inclusion. Rather than use a benchmark mode as we did with 7-Zip, here we take a set of files representative of a generic stack (33 video files in 1.37 GB, 2834 smaller website files in 370 folders in 150 MB) of compressible and incompressible formats. The results shown are the time taken to encode the file. Due to DRAM caching, we run the test 10 times and take the average of the last five runs when the benchmark is in a steady state.
AES Encoding
Algorithms using AES coding have spread far and wide as a ubiquitous tool for encryption. Again, this is another CPU limited test, and modern CPUs have special AES pathways to accelerate their performance. We often see scaling in both frequency and cores with this benchmark. We use the latest version of TrueCrypt and run its benchmark mode over 1GB of in-DRAM data. Results shown are the GB/s average of encryption and decryption.
HandBrake v1.0.2 H264 and HEVC: link
As mentioned above, video transcoding (both encode and decode) is a hot topic in performance metrics as more and more content is being created. First consideration is the standard in which the video is encoded, which can be lossless or lossy, trade performance for file-size, trade quality for file-size, or all of the above can increase encoding rates to help accelerate decoding rates. Alongside Google's favorite codec, VP9, there are two others that are taking hold: H264, the older codec, is practically everywhere and is designed to be optimized for 1080p video, and HEVC (or H265) that is aimed to provide the same quality as H264 but at a lower file-size (or better quality for the same size). HEVC is important as 4K is streamed over the air, meaning less bits need to be transferred for the same quality content.
Handbrake is a favored tool for transcoding, and so our test regime takes care of three areas.
Low Quality/Resolution H264: Here we transcode a 640x266 H264 rip of a 2 hour film, and change the encoding from Main profile to High profile, using the very-fast preset.
High Quality/Resolution H264: A similar test, but this time we take a ten-minute double 4K (3840x4320) file running at 60 Hz and transcode from Main to High, using the very-fast preset.
HEVC Test: Using the same video in HQ, we change the resolution and codec of the original video from 4K60 in H264 into 4K60 HEVC.
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Zingam - Saturday, October 7, 2017 - link
Not everybody has a rich daddy! Performance per dollar matters in all areas of life!It doesn't matter to very, very rich people or sucker fanboys!
mapesdhs - Monday, October 9, 2017 - link
Again the myth that rich people don't care about wasting money. So wrong. :D As for fanboyism, that kind of label gets hurled in both directions, but IRL has little meaning.Gothmoth - Thursday, October 5, 2017 - link
an overlcocked ryzen 1700 is bit for bit the best choice.. still.except for hardcore gamers.
and i bet intel paid you quite a bit to ignore stuff other (less intel biased) reviewers pointed out today.
mkaibear - Thursday, October 5, 2017 - link
Ryzen has no integrated GPU so it can't be the best choice for anyone without a discrete GPU (aka the vast majority of the market - about 70% as per q1 2017). Ironically the gamers are the ones more likely to snap up Ryzen as they have discrete graphics cards anyway...Ananke - Thursday, October 5, 2017 - link
I see the same, ryzen 1700 remains the best buy, followed by ryzen 1600, which recent batches seems to have 8 cores instead of 6, for around $170. They do come with heatsink, another $30 saved. With ok board it will total $250. Even better, readily built Dell gaming desktops can achieve around $800 with r580 8gb and 16 GB ram with 1700 ryzen vs above $1100 for similar Intel. It is literally no brainer choiceGastec - Saturday, October 14, 2017 - link
Wow there, rewind! "Ryzen 1600, which recent batches seems to have 8 cores instead of 6". Care to explain more?Ryan Smith - Thursday, October 5, 2017 - link
"and i bet intel paid you quite a bit to ignore stuff other (less intel biased) reviewers pointed out today."You'd lose that bet.
Now since we're apparently doing this Jeopardy style, please tell me how much you wagered so that I know how much I'm collecting. Since Intel isn't paying me, you will have to do. ;-)
In all seriousness though, taking sides and taking bribes would be a terrible way to run a business. Trust is everything, so losing the trust of you guys (the readers) would be about the worst possible thing we could do.
FourEyedGeek - Saturday, October 7, 2017 - link
Are you happy for an overclocked Ryzen 1700 to be compared against overclocked Intel processors as well?gnufied - Thursday, October 5, 2017 - link
Your bench pages are either loading very slowly or displaying Gateway timeout.Ryan Smith - Thursday, October 5, 2017 - link
Thanks. Having the server team look into it.