Re: All Graphics Cards related queries here.
so guys again found a good article related to graphics card RAM issues
quite informative
The biggest misconception out there is that more graphics RAM will increase gaming performance. But, for the most part, this is untrue. While the bandwidth of the graphics RAM might have a direct effect on gaming performance, the quantity of RAM doesn't have a direct impact on how fast a graphics card performs. The quantity of RAM does have an indirect impact on performance sometimes
The bandwidth of graphics card RAM is affected by two main factors: the clock rate and interface width. Clock rate is measured in MHz, just like a CPU. The width of an interface is measured in bits, such as 128-bits wide. Without going into too much detail, you should know that 200 MHz memory should provide twice the bandwidth of 100 MHz memory, assuming everything else is equal. Similarly, a 128-bit memory bus should provide twice the bandwidth of a 64-bit bus.
It gets a little complicated because we're talking about two variables here: clock rates and bandwidth. For example, 200 MHz, 64-bit memory should offer approximately the same bandwidth as 100 MHz, 128-bit memory. There are other factors, such as memory latency. Technology also plays a role, as GDDR5 offers twice the throughput of DDR through GDDR4 at a given clock speed. But, for the most part, all you have to remember is that more bandwidth should have a direct impact on your gaming performance.
The quantity of RAM that the graphics card employs doesn't have a direct impact on game performance, but it can have an indirect impact. Graphics card RAM will only negatively affect performance if there isn't enough to handle what a specific game title requires. The point is that all other factors being equal, a graphics card with 2GB (2,048 MB) should perform exactly the same as a graphics card with 512MB as long as the game's graphics memory requirements are below 512MB. If the game's settings and resolution require more than 512MB of graphics card RAM, the 512MB card will demonstrate a performance penalty compared to the 2GB card.
For the gamer, there are three main factors that have the most influence on how much graphics RAM you'll need: resolution, visual quality detail settings, and AA. For the most part, 512MB of RAM seems sufficient to push one of these factors to the limit, and in most cases, it can handle two of them at once. But if you plan to maximize all three--the highest resolutions, visual quality settings, and AA--then more video RAM than 512MB is a good idea.
The primary consideration should probably be resolution, because this is a hardware limitation for many of us. Typically, 20" or smaller monitors will cap out at 1680x1050, so in this case, spending extra on 1GB of graphics RAM might be frivolous. Conversely, if your monitor is 21" or larger with a 1920x1200 native resolution, purchasing a graphics card with 1GB of RAM might be a wise investment for only a little extra money.
A 2GB card is probably only realistically useful for folks who push 1920x1200 resolutions and above, and who demand the highest visual quality settings in conjunction with AA. Since the price difference is substantial, a graphics card with 2GB of RAM is probably overkill for anyone who has a monitor with a native resolution lower than 1920x1200.
than better i stay away from the heavy benchmarks. or say all sort of benchmark tools.
