Leaked TFLOPS numbers suggest Xbox Helix will outpower the PS6 by 40 percent

While gamers struggle to keep up with rising prices on current-gen consoles, details about next-gen hardware are already piling up on the other side. The latest comes from prominent AMD leaker KeplerL2.

Posting on NeoGAF, Kepler confirmed that the chips powering both the PlayStation 6 and Xbox Project Helix have taped out. Tape-out means the final chip design has been submitted to manufacturing, effectively locking in the hardware. At this stage, major specification changes are essentially off the table. Minor silicon revisions can still happen if testing surfaces bugs, but the overall architecture and capabilities are fixed.

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Along with the tape-out confirmation, Kepler shared GPU compute estimates. The PS6 comes in at 40 TFLOPS and Xbox Helix at 56 TFLOPS, giving Microsoft a roughly 40% theoretical advantage on paper. For context, the PS5 sits at 10.28 TFLOPS, the PS5 Pro at 16.7, and the Xbox Series X at around 12. Previous rumours pointed to 80 TFLOPS of FP32 performance for the PS6 and RTX 5080-beating performance, but as we said before, that was likely a double count of RDNA 5's Dual Issue capability.

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Before reading too much into the gap between the two, TFLOPS measure raw FMA throughput and do not translate directly to real-world gaming performance. Memory bandwidth, ray-tracing hardware, clock speeds, and how developers use the silicon all play a role. The Xbox Series X had a meaningful TFLOPS advantage over the PS5 this generation, yet both consoles have delivered comparable performance across most multiplatform titles. Modern upscaling also narrows visual differences significantly, regardless of where the native resolution lands.

Even so, there are a few noteworthy structural differences between the two machines. Both use AMD Zen 6 CPUs and RDNA 5 graphics on TSMC 3nm, but Helix is a chiplet design with a separate 144mm² SoC and 264mm² GPU die, while the PS6 appears to be a monolithic design at around 280mm². Helix also includes a dedicated NPU rated at up to 110 TOPS, while the PS6 integrates neural processing within the GPU. Memory remains unconfirmed for both, though the PS6 has previously been reported to use 30GB of GDDR7 on a 160-bit interface, with Helix expected to use a wider 192-bit bus.

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Kepler's PS6 bill of materials estimate jumped from around $760 to $960 in the space of a few months as memory costs kept climbing. Sony's CEO has acknowledged that memory prices are expected to remain elevated through fiscal year 2027.

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Frequently Asked Questions

Open a question for an answer from TweakTown's coverage of this news, or ask your own below.

Question #1

How much real-world gaming performance difference would 56 TFLOPS vs. 40 TFLOPS likely make?

A 56 TFLOPS versus 40 TFLOPS gap is about 40% on paper, but the story says that does not translate directly into real-world gaming performance. It notes that memory bandwidth, ray tracing hardware, clock speeds, and developer optimization all affect results, and that the Xbox Series X had a meaningful TFLOPS lead over PS5 while both delivered comparable performance in most multiplatform games. So the likely in-game difference could be much smaller than 40%, and in many titles it may end up modest.

Question #2

What advantages could Xbox Helix's chiplet design have over the PS6's monolithic design?

This story does not spell out specific advantages of Helix's chiplet layout over the PS6's monolithic design. It only says Helix uses a separate 144mm² SoC and 264mm² GPU die, while the PS6 is a single roughly 280mm² die. It also notes that Helix has a dedicated NPU rated up to 110 TOPS, while the PS6 puts neural processing inside the GPU.

Question #3

How could rising GDDR7 prices affect the final retail pricing of PS6 and Xbox Helix?

Answer question

Question #4

Why did previous rumors overstate PS6 performance at 80 TFLOPS, according to this report?

Previous rumors likely overstated PS6 performance because the 80 TFLOPS figure appears to have counted RDNA 5's Dual Issue capability twice. This report says the earlier math did not add up for that reason.

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Helix is expected to cost more still, with estimates pointing to a bill of materials around $900 at scale and a retail price of $999 as an aggressive floor, with $1,200 cited as the more likely figure. On paper, Helix is the more powerful machine. Whether that advantage is worth a potentially significant price premium is the question that will actually shape the next console generation.