Radeon RX 470
The Polaris 10 GPU in the Radeon RX 470 wasn't cut that much compared to the configuration GPU in the RX 480. Four of the 36 Compute Units were disabled, which resulted in an 11% reduction in the number of stream processors (shader ALUs, in AMD terminology) and texture mapping units. At the same time, GPU kept its back-end intact, including 32 ROPs and a 256-bit memory bus.
Of the two clock speeds that AMD specifies for its video cards, Base Clock (the frequency below which GPU does not drop under typical load) and Boost Clock (maximum frequency) - the latter in the RX 470 has changed slightly (1206 MHz versus 1266 MHz in the RX 480), but the former was immediately lowered by 194 MHz.
But in general, such a large “fork” between the lower and upper values all just reflects the tighter TDP limits of the video card compared to the Radeon RX 480 (120 and 150 W): in principle, GPU The RX 470 should operate at significantly lower frequencies, but if the power reserve allows, jumps to higher values are permissible.
Radeon RX 470 Specifications
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Chip
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Frequencies
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Memory
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Interface and TDP
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The RX 470 also lowers the effective RAM frequency - from 7/8 GHz, typical for the RX 480, to 6,6 GHz. Note that GDDR5 SDRAM chips with a bandwidth of 6,6 Gbit/s per pin are not produced, and manufacturers solder chips designed for an effective frequency of 7 GHz, which is easy to restore during overclocking. The standard amount of RAM for the RX 470 is 4 GB, but double the amount is not unusual for video cards presented by AMD partners.
