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AMD 144MB cache god U difficult overclocking 200MHz: gratifying in power consumption but busy in vain

via:快科技     time:2023/2/28 23:03:41     readed:102

Like last year's Ruilong 7 5800X3D, this year's next-generation Ruilong 7000X3D series also locks overclocking and can only be fine-tuned by PBO2, Vamp F (voltage / frequency) curve optimization, or super memory.

Still, SkatterBencher tried to see how much the Ruilong 9 7950X3D could exceed, with a reference frequency of 4.2GHz and a maximum acceleration of 5.7GHz.

AMD锐龙9 7950X3D艰难超频200MHz:功耗喜人 但白忙活了

There are two CCD chips inside the Ruilong 9 7950X3D, and the 64MB 3D V-Cache cache is stacked on one of them, which also affects the running frequency.

After testing, the maximum frequency of the stacked cache CCD can only run to5250MHzThe voltage can only be increased to 1.2V, while the maximum frequency of the standard CCD without cache can reach5750MHzThe voltage is allowed to 1.4V.

For comparison, the Ruilong 9 7950X has only one frequency limit that is 5850MHz, while the highest voltage is 1.475V.

After careful and tedious debugging, the highest single-core frequency of the Ruilong 9 7950X3D is 5.9GHz, which is only a little higher than the nominal 200MHz, which is better than nothing.

AMD锐龙9 7950X3D艰难超频200MHz:功耗喜人 但白忙活了

In fact, the external frequency can also be exceeded, but the range is very narrow, using Raphael ECLK toolsIt can only improve the 5MHz, that is, 105MHz, and the final frequency is fixed at the whole core 5.25GHz.At this point the voltage is 1.1V.

By default, the all-core frequency of the Ruilong 9 7950X3D is4255MHzBy default, the all-core frequency of the Ruilong 9 7950X3D is

If you turn off the AVX-512 instruction set, the full-core frequency can be increased to4553MHzBut the temperature will reach 81.5 ℃ and the power consumption will be 134.2 W.

All ultra-frequent methods go to battle collectively and continue to turn off AVX-512, and the best result is full-core 4592MHz, when the temperature is slightly increased to 83.3C and the power consumption is 152.1W.

AMD锐龙9 7950X3D艰难超频200MHz:功耗喜人 但白忙活了

After all this trouble, the performance improvement is very limited, with the single-core benchmark running score up to 10%, butThe actual game performance is almost the same, only one or two more frames.

AMD锐龙9 7950X3D艰难超频200MHz:功耗喜人 但白忙活了

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