How Do you Determine a GPU's capability with a simple glance at its box?

I can't say from experience with much hardware, but these are my views and how I would go about it.

While some numbers can't be compared directly between differing brands, there are some basic features to look for.

There are increasingly capable GPU's mounted on modern motherboards, but if gaming is to be taken into account then a dedicated unit will offer better performance and more choice.

There is a standard set of instructions and capabilities which are supported by the hardware and software called DirectX.

Periodically due to progression in technology a new version of this is defined, and will get physical support in newer hardware. The current standard of that is DirectX 11, and that should be the version you look for the GPU supporting.

The type of monitor or display you intend to use will have an impact, since not all will have the same output interfaces. Digital outputs such as HDMI and DVI are perferable over D-Sub/VGA, but you will need to take into account what you are capable of connecting to your monitor/TV. Though there are various adaptors to convert between some, and certainly from VGA/D-Sub to DVI if I recall.

Many of those features however may not be listed on the literature or display for the computer, so it may require some research online to determine the features of specific models.

As for brand there are two primary ones, ATI/AMD and Nvidia. While they tend to offer their own features or support, particularly with multi-card or multiple-displays, if you intend to only use a single card and single monitor then you shouldnt need to worry as to which you get so much. Nvidia do seem generally accepted as having the hardware with more capability or "bang per buck" (to borrow from another comment), with ATI/AMD being more budget orientated, but for many users that will not be a significant difference.

I agree with EnvoyOfTheEnd's answer, and want to add some more. Please dont judge what you want to buy by the packaging alone. I bought my friends a lot of IT stuff, and being an asian, we tend to buy something that offers more bang for the buck. And ususally, most well known brand would put up a lot of "extras" that is "Free with purchase" whatever crap that is.

Gamers edition, extreme edition, TOP edition, most of the are usually bundled with games or/and other things that is actually can be much cheaper if you buy it saperately (We buy second hand games, or trade them).

For actual performance, visit your local IT store and see for yourself for your budget, what can you get and write them down. In my place we can actually download pricelists and from that pricelist I can do some homework and google some benchmark.

hope this helps.

Well, if you want to know if it will work, make sure you check how much power it needs, how much RAM you need for it to work, and the size. I find that the most important. Then, check the display ports. That's about it.

yeah, each graphics card has a wide variety of specifications, such as the available memory bandwith, the pipelines, the core speed, the shader speed, memory speed, memory bus width, memory type GDDR5 IS ALL YOU WANT. NOT DDR3 OR GDDR3 VRAM if it shares any memory with the main system for video (gddr5 is always dedicated, while gddr3/ddr3 is almost always shared, resulting in less general performance) the direct technology, 11 is the latest, shader version max supported and other things. there's also a guide to decoding the performance level of the card. like for example, if you wanted a 6990 or a 590 this is how it'd be figured so the 6 is the sixth generation ati gpus the 9 is the performance level, the highest it gets the 9 is also a measure of performance level. 0 is also just there, means nothing at all

so to make it a tad simpler, if you wanted a new GPU, and you wanted to buy a gaming card, the 7, 8 and 9 series offer the best performance, because the 5 and 4s are very low level and the 3 2 and 1s are just basic performance cards for everyday tasks. i believe the same system would apply for nVidia's as well.

for example GTX 590 Ti 5 would be the video card generation 9 would be the performance level 0 is also just there, no true meaning.

hope this helped!

The only way to determine a GPU's actual prowess without spending thousands to compare them yourself, is to go online and search for benchmarks. Also, you'd have to research on how much they would cost around your area as you wouldn't want to blow your budget on something weak.

The numbers game when it comes to how much memory available for use by the GPU is invalid, unless we're comparing high end GPUs like the GTX580 or a 6970. Between lower and middle class GPUs, the memory clock(MHz) together with the memory interface(64/128/256bit) determine how well your GPU utilizes that memory.

You have a dedicated GPU on your LAPTOP, which usually means it has it's own dedicated memory plus shared memory from the RAM on your laptop.