Why can an Xbox Series X run every game in 4k beautifully for £450 when my £1300 gaming pc could not do the same?

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Also, what gpu and processor combo would match the XSX performance?

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5 Answers

Anonymous 0 Comments

To explain your second question, looking up the Xbox Series X’s GPU on TechPowerUp, and comparing it to RDNA 2 series GPUs (Because the GPU and CPU were both made by AMD), 2 came to mind when looking at shading units, TMUs, and ROPs. Those are basically things that help the main GPU die render things, like shadows.

The Xbox Series X’s Shader/TMU/ROP count comes out to 3328/208/64.

No existing RDNA 2 GPU has that exact amount, but we can guess.

Two that would match closely would be the Radeon Pro W6800 and RX 6800, both with 3840/240/96.

Now, let’s look at raw performance, with both FP16 and FP32 performance, which are measured in TFLOPS, or teraFLOPS. The term “FLOPS” is an acronym for “Floating Point Operations Per Second”.

As a baseline, the Series X gpu would have 24.29 FLOPS in FP16 perforance, and 15.12 in FP32.

The Radeon Pro W6800 has 35.64 TFLOPS of performance in FP16, with 17.82 TFLOPS of FP32.

The RX 6800 has 32.33 TFLOPS in FP16, and 16.17 in FP32.

Including the other theoretical performance benchmarks, which are “Pixel rate”, how many pixels the GPU can throw out per second, “Texture rate” which is the same for textures . (I don’t know if this is correct, please let me know if not), and FP64 performance. FP16, FP32, and FP64 are all floating-point calculations that take up 16 bits, 32 bits, and 64 bits respectively. The CPU needs lots of these, but the GPU could use some for, say, bruteforcing data to try to generate a console ID.

I won’t include these mentioned above, because this post is already getting long enough.

Comparing between the RX 6800 and the Xbox Series X’s GPU, it would be safe to say that the Series X has a nerfed RX 6800 in it.

Now for CPU, I’m not sure, but I believe it is a Ryzen of sorts.

Edit: Posts from u/prasiatko, and u/jowie7979 said the CPU was close to a Ryzen 7 3700X.

Including a case, PSU, a 500GB SSD, and a case, a computer that would *theoretically* match the Xbox Series X in performance would cost approximately $1200. [Here’s what I chose, if you’re curious.](https://pcpartpicker.com/list/2QWmVw)

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