GeForce GTX 465

  The video card is equipped with 352 CUDA cores – a little more than two-thirds of the computing resources of the chip. Already from these characteristics you can guess what kind of performance the GeForce GTX 465 will have. But the CUDA cores are not the only resources that have been cut in the new product. The GeForce GTX 465 also provides 44 texture units and four ROP sections capable of producing thirty-two 32-bit integer pixels per clock. The memory interface was also cut down, from 320-bit for the GeForce GTX 470 to 256-bit, that is, the video card is equipped with 1 GB of GDDR5 memory. 

The stated TDP is 200 W - 15 W less than the GeForce GTX 470, and 50 W less than the GeForce GTX 480. In our initial review of the GTX 470 and 480, we already noted a significant disparity between the stated power consumption levels of the video cards based on Nvidia GF100 and competitors from AMD. Indeed, it appears that the two companies define power consumption levels differently - just as AMD and Intel CPU ratings cannot be compared with each other. As for Nvidia, the TDP is the maximum power consumption in real-world applications and does not match the maximum power consumption in benchmarks like FurMark. This helps explain why the GeForce GTX 480 draws 133W more than the GTX 465 under load in our tests, even though the official TDP difference is 50W.

The GeForce GTX 465 uses three GPC clusters - that is, one cluster is completely disabled. Of the 12 remaining SM streaming multiprocessors (recall that there are four multiprocessors in one cluster), Nvidia disabled another, leaving 11 SMs, each with 32 CUDA compute cores. Actually, this is where we get the number of cores of 352.

Also remember that in the Fermi architecture, texture units are tied to streaming multiprocessors (SMs). Each SM is allocated four texture units. You can do the math yourself – 11 SMs with four units each lead to 44 texture units. Moreover, geometric performance also drops, since now in GPU There are 11 PolyMorph engines present.

Nvidia Decided Not to Change the Frequency GPU and shader unit compared to GeForce GTX 470 – they still work at 607 and 1215 MHz, respectively. But the memory frequencies have decreased slightly – from 837 to 802 MHz. Of course, all these cuts have led to a change in performance.

Characteristics of NVIDIA GeForce GTX 465

Name GeForce GTX 465 Core GF100 (Fermi) Process technology (µm) 0.04 Transistors (millions) 3200 Core frequency 607 Memory operating frequency (DDR) 1603 (3206) Bus and memory type GDDR5 256-bit Bandwidth (Gb/s) 102.592 Unified shader units 352 Unified shader unit frequency 1215 TMU on conveyor 44 ROP 32 Shader Model 5.0 Fill Rate (Mpix/s) 19424 Fill Rate (Mtex/s) 26708 DirectX 11.0 Memory Capacity 1024 Interface PCI-E 2.0 x16

The video card turned out to be very inefficient in terms of power consumption and too slow in terms of performance. It appeared as a temporary player on the market and quickly gave way to the GeForce GTX 460.