Look at the *Tom's Hardware Graphics Articles* and review the most recent "Best Graphics Cards for the Money" Article (published monthly) to get you started. Tom's Hardware has a staggering amount of information about all of the latest and greatest graphics cards to keep you up to date.
Create a New Topic for your GPU question with a descriptive title, such as "Upgrading 8800GT, $400 budget" or "Need Advice on Radeon R9 280X vs. GTX 770", not just "Help" or "WHAT CARD??".
In order to make things easy, copy and paste the following template into your post and edit the italicized examples to suit your needs:
APPROXIMATE PURCHASE DATE:(e.g.: this week (the closer the better))BUDGET RANGE:(e.g.: USD $150-250)Before / After Rebates
USAGE FROM MOST TO LEAST IMPORTANT:(e.g.: Gaming [and what games you want it to play - a card for WoW only will be much different than one for Crysis 3 or Bioshock Infinite at full settings], Folding@Home, home theater/watching movies, Adobe Creative Suite 5/6, Autodesk Architectural Suite 2014, etc )
CURRENT GPU AND POWER SUPPLY:(e.g., EVGA Geforce GTX 560TI and Rosewill Hive 650W PSU - without this info, it's really hard to help you)
OTHER RELEVANT SYSTEM SPECS:(e.g., make/model of CPU, MoBo, memory - this can help us determine whether or not a given card is compatible with and makes sense for your system. For high-end cards, knowing your case/cooling setup may also be helpful)
PREFERRED WEBSITE(S) FOR PARTS:(e.g.: newegg.com, ncix.com -- to show us selection & pricing)COUNTRY OF ORIGIN:(e.g.: Grand Fenwick)
Tom's Hardware gets users from literally all over the world. Knowing the pricing and availability of parts relative to where you live will help us (the community) to help you (the original poster) better.
PARTS PREFERENCES:(e.g., if you will only use AMD cards, want PhysX card, prefer XFX cards over Sapphire cards, etc., tell us)
OVERCLOCKING:Yes / No / MaybeSLI OR CROSSFIRE:Yes / No / Maybe
ADDITIONAL COMMENTS:(e.g.: Need to have better than stock cooling; Want a card with a lifetime warranty; Must run Crysis 3 with full AA on a three-display setup, etc.)
REMEMBER: The more information we have about your system, your budget, and what you're using the card for, the better the advice we can give you - providing it up front gets you your answers and puts a card in your hands that much faster!
Credits: This post was inspired by, and modeled on, theAnimal'sHow to Ask for New Build Advice Thread in the Home Build forum. Big thanks to him for his hard work on that thread, which made this one much easier.
The links originally pointed to hardware that is now long discontinued. Updated with links to current products. - G-Unit1111