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NVIDIA GeForce RTX 2070 Review: The Perfect Card For 1440p

By: Anthony Garreffa | NVIDIA GeForce GPU in Video Cards | Posted: Oct 16, 2018 1:00 pm
TweakTown Rating: 96%Manufacturer: NVIDIA

Next-Gen Memory: GDDR6

 

NVIDIA's new GeForce RTX 20 series graphics cards are the first ever to make use of GDDR6 memory technology, of which NVIDIA has 11GB on the GeForce RTX 2080 Ti that kicks off at 14Gbps of memory bandwidth. The new GeForce RTX 2070 has 8GB of GDDR6 at the same 14Gbps of bandwidth.

 

nvidia-geforce-rtx-2070-review-gtx-1080-ti-perf_211

 

This type of memory bandwidth is incredibly important as the resolution of your games scale, with 4K really needing the increased GPU horsepower and especially the much faster memory. 8GB of next-gen GDDR6 at 14Gbps is a pretty large jump over the GeForce GTX 1070 which had the same 8GB framebuffer but used GDDR5 with memory clocks of only 8Gbps in comparison.

 

The 8GB of GDDR6 on the new GeForce RTX 2070 is on the same 256-bit memory bus as its GTX 1070 predecessor, but the new GDDR6 has radically more bandwidth at its disposal. We're talking about 448GB/sec of memory bandwidth on the RTX 2070 over the 256GB/sec on the GTX 1070.

 

NVIDIA explains GDDR6 as the "next big advance in high-bandwidth GDDR DRAM memory design", something that is enhanced "with many high-speed SerDes and RF techniques, GDDR6 memory interface circuits in Turing GPUs have been completely redesigned for speed, power efficiency, and noise reduction. This new interface design comes with many new circuit and signal training improvements that minimize noise and variations due to process, temperature, and supply voltage. Extensive clock gating was used to minimize power consumption during periods of lower utilization, resulting in significant overall power efficiency improvement. Turing's GDDR6 memory subsystem delivers 14 Gbps signaling rates and 20% power efficiency improvement over GDDR5X memory used in Pascal GPUs".

 

 

Turing's package and board designs were "carefully crafted" to handle the higher speed requirements, something that is helped along with a huge 40% reduction in signal crosstalk, which NVIDIA says is "one of the most severe impairments in large memory systems". NVIDIA says that "every aspect of the memory subsystem was carefully crafted to meet the demanding standards that are required for such high frequency operation. Every signal in the design was carefully optimized to provide the cleanest memory interface signaling as possible".

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