![]() ![]() Nicknamed the Pentium K by budget gamers, the chip is the only unlocked dual-core chip in Intel’s lineup and cheaper than dirt. Compare that to Intel’s low-cost wonder: the dual-core Pentium G3258 “overclocked” to 4.8GHz. Look at the results for the simulated dual-core Core i3-4330, which is a 3.5GHz CPU with no Turbo-Boost and Hyper-Threading. The takeaway from these simulated CPU tests is that thread-count trumps clock speed when it comes to DirectX 12 performance improvements. Including this one.” These are tests of DirectX 12 performance between various simulated CPUs. “How many combat drops Lieutenant?” “Two. The lowest I could set it for was 3.6GHz, which is 200MHz higher than the stock part. One other note: I had an issue underclocking the CPU to lower speeds while trying to simulate the Core i5-4670K. I haven’t found cache to make huge dents on most tests, and if anything my simulated CPUs would perform better than their actual counterparts thanks to the larger cache available. the 2MB on a Celeron or 6MB on a Core i5 chip. Keep in mind that these are simulated performance results. (If you want to dig into the details of the chips I tried to simulate, I’ve lined up the details over at Intel’s ARK.) To make this a little easier to understand from a system-buying or -building perspective, I also tried mimicking the different clock, core count and Hyper-Threading states of various Intel CPUs. Here’s how DirectX 12 performance could scale across different clock speeds and thread counts on Futuremark’s new API Overhead Feature test Which CPU is best for DirectX 12? I’m only comparing the DirectX 12 performance because that’s all that matters here. All of the tests were conducted with the GeForce GTX Titan X card. The big winner was the Core i7-4770K set to its default state: four cores and Hyper-Threading on. I limited the quad-core Core i7-4770K to two cores, switched Hyper-Threading on and off, and limited the clock speeds the CPU could run at. With that in mind, I decided to see how the CPU can change the results, by varying the core and thread count as well as clock speeds in various configurations. It’s about exploiting more performance from CPUs so they don’t bottleneck the GPU. Using results supplied by Microsoft, DX12 does indeed give a bump to the Intel’s integrated graphics but it’s pretty far short of real gaming metal.īut remember that DirectX 12 is about making the API more efficient so it can take better advantage of multi-core CPUs. Not bad-until you glance back at the AMD and Nvidia charts above. That’s pretty much the very best performance you can get out of an Intel chip today, and here are the results. The quad-core chip is used in high-end all-In-ones and Gigabyte’s Brix Pro. I didn’t see the point in running tests on Intel’s IGP.įortunately, Microsoft provided results from its own IGP machine using a Core i7-4770R “Crystal Well” CPU with Intel Iris Pro 5200 graphics. With Intel’s graphics actually in use by more “gamers” than AMD and Nvidia’s discrete cards, it’s a valid question, but I’ll be honest: Gaming with IGP ain’t real gaming. You’re also going to be curious about DX12’s impact on integrated graphics processors (IGP). Here we see the GeForce GTX Titan X in action in DirectX 12. It then tests AMD’s DirectX 12-like Mantle API-if Mantle is supported by the hardware-and finally DirectX 12 performance. The first test is a comparison of DirectX 11’s single-threaded performance vs. 3DMark rapidly ramps up the draw calls and objects until the frame rate drops under 30 frames per second (fps). The less efficient the API is in handling these “draw calls” from the CPU to the GPU, the fewer objects can be drawn on the screen. This instruction goes through the API, whether it is DX11, DX12, or AMD’s Mantle. The test works by tasking the GPU to draw something on the screen. Here’s how to get it to run if you want to do your own testing. Don’t use it to compare PC Y with PC X, nor as a GPU test: This is all about how your particular PC configuration performs when running DX11, and how that same PC configuration performs when running DX12.Įven better, the test is available immediately to anyone who owns 3DMark. 3DMark and Microsoft point out that the new feature test is not a tool to compare GPUs but an easy way to gauge a single PC’s performance and API efficiency. ![]()
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