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TurboCache
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<p><a href="/facts/Nvidia/8QfCgqbu">Nvidia</a>'s TurboCache technology is a method of allowing <a href="/facts/Video_card/bcKfPyFt">video cards</a> more available <a href="/facts/Video_memory/koI9FGo5">video memory</a> by using both onboard video memory and main system memory. Main memory is accessed using the high-bandwidth <a href="/facts/PCI-Express/ADhsLCUK">PCI-Express</a> bus. </p><p>TurboCache was developed as a means to provide a better cost/performance ratio by reducing the amount of memory modules on the video card. According to Nvidia, a GeForce 6200 with TurboCache will perform about four times better than the <a href="/facts/Intel_GMA/wXGK293M">Intel GMA 900</a>. As with integrated graphics, the operating system may report a lower amount of main memory than is physically present when main memory is used. </p><p>When TurboCache was introduced on the <a href="/facts/GeForce_6200/PNdz65E0">GeForce 6200</a> with TurboCache, there was confusion over how much local memory a buyer could expect from the TurboCache enabled video card. This figure could lie between 16 and 128 <a href="/facts/Mebibyte/BNHUp9Qq">MiB</a>, with Nvidia listing only total memory from both video memory and main memory. Eventually, NVIDIA included only video memory sizes on marketing and packaging. </p><p>While TC can improve 3D quality in games using a great deal of video memory for texture rendering, performance of games utilizing a large percent of system RAM (such as EA Games' Battlefield series and their mods that typically consume 512 MB-1 GB RAM) can suffer dramatically on systems with 1 GB RAM or below. Some users of such setups have attempted to disable TC. Such an option is not supported by NVIDIA's official drivers but can be accomplished using a registry modification for <a href="/facts/Windows_XP/IozrkAYS">Windows XP</a> users or a configuration file modification for <a href="/facts/X.Org_Server/7AaPmYtV">X.Org Server</a> users. </p><p>A video card with TurboCache typically is slower in 3D benchmarks than a similar video card which has its own discrete video memory. </p>