Soldato
- Joined
- 28 May 2007
- Posts
- 10,222
Kaby Lake-G's Vega Credentials Questioned: Rapid Packed Math Not Working
http://www.tomshardware.com/news/kaby-lake-g-vega-polaris-graphics,36844.html
Tomshardware was shocked to discovered Vega M is Polaris 22 after found out Rapid Packed Math was not worked in Far Cry 5 and also it did not improved on Vega 11 found in desktop and laptop Ryzen 5 2400G much which both Vega 64 and 56 only benefited most.
LMAO I think this is worse than GTX 970 4GB scandal, really feel very sorry for all owners bought Vega M Mini PC, Vega M laptops, desktop and mobile Ryzen 3 and 5 with Vega 3, 5, 8, 10 and 11 APU.
Mate you really need to read. The test they done showed that the r5 2400g does infact have rapid packed math. Straight from your link.
We began our tests with a Radeon RX 470 (Polaris) to confirm that its FP32 and FP16 rates are similar. Indeed, they are. We also tested Radeon RX Vega 64 and 56, which returned a 64.2% and 65.8% improvement with FP16, respectively. Then we followed up with Ryzen 5 2400G and its integrated Vega 11 core. That engine yielded a 61.8% increase. Based on those experiments, it appears that the benchmark and API leverage AMD's Rapid Packed Math functionality.
Interestingly, Intel's Core i7-8809G and its Vega M GH engine responded more like the Polaris-based RX 470. What does that tell us? At least for now, it seems Rapid Packed Math isn't enabled on Kaby Lake-G's Radeon GPU. Since Intel leaves its HD Graphics 630 block enabled on Kaby Lake-G, we also tested that. An outcome of 585.22 MPix/s with FP32 operations and 868.21 MPix/s with FP16 demonstrates Intel's own support for mixed data types.
Oh and Polaris does not support dx12.1 and again straight from your article.
But AMD's Ryzen 5 2400G processor--armed with on-die Vega graphics--also supports DirectX 12.1.
So it's not like the gtx970 as Nvidia kept that a secret until some clever person came across how the gtx970 was really configured. This chip looks to be a hybrid of Vega and Polaris tech. Intel gave the spec and AMD delivered what they asked for. If anyone is in the wrong it's Intel and not AMD. Why would you feel sorry for them any how. Intel's chip is the fastest Apu you can buy on the PC so in effect it's the top of the tree for what it is. Polaris based chips are still as good bracket for bracket compared to the competition especially in dx12.
Last edited: