However, the difference is quite stark, enough that in our review of the A770, we agreed with Intel that ReBAR is a must if you’re going to play games on an Arc GPU. The result for Nvidia and AMD graphics cards is a slight uplift in performance, and the same is true for Intel’s Arc cards. That reduces memory bottlenecks and lets both the CPU and GPU work at peak performance, thereby improving real-world performance in turn. ReBAR effectively gives the CPU access to the whole GPU memory as and when it needs it, rather than smaller portions of it. ![]() Resizeable BAR is a feature in modern graphics introduced by Nvidia as a counter to AMD’s implementation of Smart Access Memory - which is essentially the same feature. Without it, the new Arc GPUs won’t perform anywhere near as well as they should. In fact, it also recommends only Intel 10th-generation and newer CPUs use Arc GPUs too, as, like Ryzen 3000, that is the oldest generation of Intel CPU where ReBAR is supported. This isn’t just a way for Intel to limit the potential market for AMD CPU owners - as if it would want to sell fewer GPUs. ![]() ![]() The upcoming midrange Nvidia and AMD GPUs may be lacking in one key areaĪfter 15 years, Intel may be killing the Core i5 and Core i7 AMD may be sticking to a controversial choice with Ryzen 8000
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