How we work
Everything about how PETME content is made, on one page. Sources, checks, corrections, responsibility. Nothing extra.
What we do
PETME is a computer hardware bench from Slovakia. We write procedures and build tools for practical questions. Does this processor fit this board? What power supply do I need? Why is my drive not faster? What does the label on my charger mean? The aim is simple: you make the decision yourself.
What we do not do:
- We do not sell hardware. No prices, no discounts, no links to shops.
- No advertising and no affiliate links.
- No “best product” rankings and no recommendations of specific models.
- No performance measurements. We have no lab and will not pretend to have one.
- No made-up quotes, reviews, experiences or statistics.
- We collect nothing about visitors. Details are on the privacy page.
If PETME ever starts selling anything, it will be kept apart from the guides and stated here.
Sources
We take technical figures from primary sources:
- official manufacturer specifications (AMD, Intel, NVIDIA, Microsoft and others),
- websites and documents of standards bodies (USB-IF, PCI-SIG, SATA-IO, VESA, HDMI Forum and HDMI LA, Wi-Fi Alliance),
- the text of legislation: EU law from EUR-Lex, Slovak law from Slov-Lex in the version in force on the date checked. Slovak legal texts are available in Slovak only.
Where no primary source was available, we used a secondary one: a press release republished by a specialist outlet, or a legal commentary. The notes then mark it “secondary source”.
What we cannot verify, we leave out. Example: for its 65 W TDP processors AMD does not state the maximum power draw on the product page. So the PSU calculator uses a calculation and labels it an assumption in the breakdown.
We take no money from manufacturers or retailers and have no business relationships with them. Product names appear only as examples for which the maker has published the figures being explained.
How we check
Every guide has a Checked line with a date next to its title. On that day we opened every link in the notes and compared the figures with the source. If a source changes later, the guide may be out of date until the next check. For rules and deadlines, check the current wording yourself.
Interface speeds
We give theoretical maximums from the specifications. PCIe is calculated in one direction: lane rate (GT/s) × number of lanes × 128/130 (the encoding of PCIe 3.0 to 5.0) ÷ 8 = GB/s. SATA 6 Gb/s uses 8b/10b encoding, so its ceiling is roughly 600 MB/s. For USB, Thunderbolt, HDMI and DisplayPort we give the raw link rates from the specifications. Real transfers are lower.
Power estimate
The PSU calculator takes the processor’s maximum power draw (not TDP) and the graphics card’s power draw from the makers. Other parts are counted with rough assumptions, marked “Assumption” in the breakdown. It adds 20, 30 or 40 % headroom and rounds up to the next 50 W. The graphics card maker’s recommendation wins.
Compatibility
The compatibility check knows only rules the makers have published: which chipsets go with which socket, AMD’s AM4 table, AMD’s statement on AM5 board compatibility, and memory types by socket. For anything else, such as exact support for a given CPU on an Intel board, it sends you to the board maker’s CPU support list.
Legislation
Our explanations of the law are simplified and do not replace its text. This is not legal advice.
Corrections
Found a mistake, an outdated figure or a dead link? Write to dielna@petme.sk. Send the page address and what you think is wrong, ideally with a source. There is no form on the site.
What we do with it:
- We check the report against the source.
- We fix factual mistakes (a wrong figure, date or interpretation) and add a dated note describing the fix at the end of the guide.
- Typos and wording that do not change the meaning are fixed without a note.
- When a source changes, for example a new version of a specification, we update the text and the date checked.
List of corrections: since the site launched on 12 October 2026 we have published no corrections of fact.
Who writes this
The content is prepared by, and is the responsibility of, PETME. Guides are not signed with names. We do not claim a team we do not have or expertise we could not back up. No external expert or lawyer reviews the content.
Bench contact: dielna@petme.sk. More on the Contact page.
The petme.sk domain before
The petme.sk domain used to belong to another party, which ran an online computer shop on it. Today’s PETME has no connection with that shop or its operator, takes on none of its obligations, and has no access to its orders, customers or warranty claims.
Old links to the shop’s products and categories either lead to the guide for the same type of device, or to a page saying the content no longer exists.
Source list
Every source used on the site, by publisher.
- AMD: AMD Socket AM5 Chipset – chipsets, PCIe lanes, USB
- AMD: AMD Socket AM4 Chipsets – specifications and processor compatibility
- AMD: AMD Ryzen 9 9950X – specifications (TDP 170 W, AM5, DDR5)
- AMD: AMD Ryzen 7 9700X – specifications (TDP 65 W, AM5, DDR5)
- AMD: AMD Radeon RX 9070 XT – specifications (TBP 304 W, recommended PSU 750 W)
- audioXpress (report on HDMI 2.2): HDMI Forum Releases HDMI Version 2.2
- Bird & Bird: Right to Repair Directive 2024/1799 – the Annex II product list and deadlines (secondary source)
- CISA (US-CERT): Data Backup Options – the 3-2-1 rule
- epravo.sk: Right to repair and the new rules on consumer claims (commentary on Act 310/2025, secondary source, in Slovak)
- EUR-Lex: Commission Implementing Decision (EU) 2021/1067 – the 5945–6425 MHz band
- EUR-Lex: Directive (EU) 2022/2380 – the common charger (USB-C)
- EUR-Lex: Directive (EU) 2024/1799 on common rules promoting the repair of goods
- EUR-Lex: Commission Notice C/2025/214 – replaceability of portable batteries under Regulation (EU) 2023/1542
- EUR-Lex: Directive 2012/19/EU on waste electrical and electronic equipment (WEEE)
- Hardware Busters (analysis of the Intel specification): ATX v3.1 & PCIe CEM 5.1 – the 12V-2×6 connector (secondary source)
- HDMI Forum: HDMI Forum Releases Version 2.0 (up to 18 Gb/s)
- HDMI Licensing Administrator: Ultra96 and Ultra High Speed HDMI Cable (96 and 48 Gb/s)
- Intel: Intel Core Ultra 9 285K – specifications (FCLGA1851, DDR5, PBP 125 W / MTP 250 W)
- Intel: Intel Core i9-14900K – specifications (FCLGA1700, DDR5 and DDR4, MTP 253 W)
- Intel: Intel Z690 Chipset – specifications
- Intel: Intel Introduces Thunderbolt 5 (80 Gb/s, Bandwidth Boost 120 Gb/s)
- Microsoft: Windows 11 – minimum system requirements
- Microsoft: Windows 10 support ended on 14 October 2025 (ESU until 12 October 2027)
- NVIDIA: GeForce RTX 50 comparison – TGP, recommended PSU wattage, connectors
- NVIDIA: GeForce RTX 5090 – specifications and preparing your system (dimensions, power)
- PCI-SIG: PCI Express 6.0 Specification
- PCI-SIG (press release): PCI Express 5.0 – 32 GT/s, up to 128 GB/s at ×16
- Puget Systems: Z890 vs B860 vs H810 – overview of LGA1851 chipsets (secondary source, citing Intel ARK)
- SATA-IO: Fast Just Got Faster: SATA 6Gb/s (white paper)
- Slov-Lex: Act No. 310/2025 Coll. – amendment to the Consumer Protection Act (§ 13a, § 13b), in force from 31 July 2026 (in Slovak)
- Slov-Lex: Act No. 79/2015 Coll. on Waste (§ 32, § 37, § 38) – version in force from 1 January 2026 (in Slovak)
- Slov-Lex: Government Regulation No. 276/2006 Coll. on work with display screen equipment (in Slovak)
- USB Promoter Group: USB4 Version 2.0 – announcement (up to 80 Gb/s)
- USB-IF: USB 3.2 Specification – 5, 10 and 20 Gb/s speeds
- USB-IF: USB4 Specification
- USB-IF: USB Charger (USB Power Delivery) – up to 240 W
- VESA: VESA Publishes DisplayPort Standard Version 1.4
- VESA: VESA Releases DisplayPort 2.1 Specification (UHBR10/UHBR20, DP40/DP80 cables)
- Wi-Fi Alliance: Wi-Fi (MAC/PHY) – Wi-Fi 7, Wi-Fi 6/6E, Wi-Fi 5
Text revised: 13 October 2026