These are approximate values, with recommendations based on having power to spare. Subtracting 20mm from your measurement and buying a card that's shorter than the resulting length should do the trick.

Even if you measure 300mm of clearance and a graphics card says it's 300mm long, it may be too snug a fit. We recommend giving yourself some wiggle room as well. A tight fit at the back of your GPU could make it impossible to connect the power cables. Most cards have them on the top, but some (eg, Nvidia's RTX 2060 Founders Edition) have them on the back. Also pay attention to where the PEG connectors are located on whatever GPU you purchase. It doesn't matter if it's drive bays, fans, or the front of the case - just measure near your primary PCIe x16 slot (the one closest to the CPU cooler), as that's where your graphics card should go. To determine how long your graphics card can be, measure from the expansion slots on your case to whatever part is most likely to obstruct the graphics card on the other end. We recommend going old-school and using a ruler or measuring tape - it will likely take less time and give you more accurate information. For pre-built PCs, you probably won't have it or be able to find the information online. Browser - Google Chrome 10+, Internet Explorer (IE)10.0+, and Firefox 3.6.x, 12.To find out how big your GPU can be, you could try looking at your case manual, assuming you have that.Browser - Google Chrome 10+, Internet Explorer (IE)10.0+, and Firefox 3.6.x, 12.0+.Operating System - Windows 7, Windows 8, Windows 8.1, Windows 10.Remove 'HP Support Solutions Framework' through Add/Remove programs on PC.HP Support Solutions Framework - Windows Service, localhost Web server, and Software.This tool will detect HP PCs and HP printers. Note: This tool applies to Microsoft Windows PC's only. Technical data is gathered for the products supported by this tool and is used to identify products, provide relevant solutions and automatically update this tool, to improve our products, solutions, services, and your experience as our customer. This product detection tool installs software on your Microsoft Windows device that allows HP to detect and gather data about your HP and Compaq products to provide quick access to support information and solutions.

Hewlett packard 1497 motherboard